MIXED LEAGUES (Yahoo: 15 percent owned, ESPN: 10.7 percent) Griffin didn't miss a beat in his return from a shoulder strain last Saturday against the Red Sox, giving up just one run on three hits and zero walks over seven innings while striking out five. The 24-year-old right-hander is now 4-0 with a 2.26 ERA and 40/10 K/BB ratio in 52 1/3 innings over his first nine major league starts. Griffin has only averaged 89.7 mph on his fastball, so he's not a power guy, but he has solid command and quality secondary pitches. He has a good chance to keep a rotation spot down the stretch and Oakland provides a perfect backdrop for him to find success as a backend starter in the long-term. I wouldn't hesitate using him Friday against the light-hitting Mariners.D.J. Short's complete Waiver Wired Column
MIXED LEAGUES (Yahoo: 10 percent owned, ESPN: 18.6 percent) Mayberry was one of those guys a lot of folks picked as a sleeper in fantasy drafts this spring. I know I did. In a couple leagues, actually. While he made many of us look silly early on, he has really turned things around recently. The 28-year-old is hitting .368 (25-for-68) with five home runs, three doubles and 14 RBI over his last 18 games. He should continue to play every day down the stretch as the Phillies continue to evaluate their internal options for 2013, so his pop and multi-position eligibility should come in handy in deeper mixed leagues.D.J. Short's complete Waiver Wired Column
MIXED LEAGUES (Yahoo: 31 percent owned, ESPN: 35.4 percent) Don't laugh. In case you hadn't noticed, Arroyo has been on a nice roll for a while now, winning seven out of his last nine starts while posting a 3.33 ERA and 41/12 K/BB ratio over 70 1/3 innings. The 35-year-old right-hander has allowed three runs or less in each of his last five starts. He's well worth using Saturday in a very favorable matchup against the last-place Astros.D.J. Short's complete Waiver Wired Column
MIXED LEAGUES (Yahoo: 37 percent owned, ESPN: 36.9 percent) Detwiler doesn't get as much attention as his fellow rotation mates, but fantasy owners shouldn't complain, as he's still available in more than 60 percent of mixed leagues. The 26-year-old southpaw carved up the Cubs on Labor Day by tossing seven scoreless innings and now holds a 3.15 ERA on the year. He's not a great source for strikeouts (5.53 K/9), but his walk rate (2.51 BB/9) is pretty acceptable and he has induced ground balls 52 percent of the time, which is a big reason why he has only allowed nine homers in 140 innings this year. Detwiler should be started in all formats this weekend against a Marlins team which ranks 28th in the majors in runs scored and has struggled against southpaws all season.D.J. Short's complete Waiver Wired Column
MIXED LEAGUES (Yahoo: 20 percent owned, ESPN: 39.9 percent) I have been waiting for Ruggiano to turn into a pumpkin for a couple of months now, but it just hasn't happened. While the 30-year-old has come back down to Earth a bit since his fantastic showing in June and early July, he's still hitting .289 with seven homers, 15 RBI and eight stolen bases in 44 games since the All-Star break. Hard to complain about that. You might be surprised to learn that his .955 OPS is eighth-highest in all of baseball among players with at least 250 plate appearances. Yes, even higher than teammate Giancarlo Stanton. Ruggiano has pop, speed and a regular spot in Ozzie Guillen's lineup, so there's really no reason why he shouldn't be owned in most leagues right now.
MIXED LEAGUES (Yahoo: 26 percent owned, ESPN: 22.7 percent)When Carpenter underwent surgery in mid-July to alleviate thoracic outlet syndrome, he was expected to miss the rest of the season. Apparently not. The veteran right-hander threw a three-inning simulated game on Tuesday and is scheduled to stretch out to five innings on Monday. It's suddenly realistic that he could be back in the Cardinals' starting rotation within a couple of weeks. If you have some roster flexibility, he's makes for a fine DL-stash.
MIXED LEAGUES (Yahoo: 5 percent owned, ESPN: 3 percent) Cabrera is hitting just .235 on the year, so you're buying him for one reason and one reason only: Speed. The 25-year-old swiped two more bases Wednesday night and now has 28 stolen bases in 29 attempts this year. He's tied for 12th in the majors in steals, despite appearing in just 94 games. Yes, his batting average isn't ideal, but it hurts a bit less in a standard roto league where your players have piled thousands of at-bats by now.
MIXED LEAGUES (Yahoo: 16 percent owned, ESPN: 26.4 percent) Remember when Britton was a waiver wire darling early last year? We could be witnessing the same thing right now. The 24-year-old southpaw struck out eight over seven shutout innings Tuesday night against the Blue Jays and has a 0.94 ERA and 29/5 K/BB ratio in 26 2/3 innings over his last four starts. Per ESPN, opponents are 0-for-20 with 13 strikeouts against his slider during that timespan. Pretty impressive. He'll face a tough test against the Yankees this weekend, but it's not like the Bombers are at full strength at the moment. Use him as a matchup play moving forward at the very least.
MIXED LEAGUES (Yahoo: 12 percent owned, ESPN: 13.6 percent) Many projected that Aoki would end up as a fourth outfielder when he signed his two-year, $2.5 million deal with the Brewers last offseason, but he has ended up being quite the bargain. The 30-year-old outfielder has hit safely in nine straight games (five of them the multi-hit variety) and is now hitting .287 with seven homers, 35 RBI, 22 stolen bases, 62 runs scored and a .770 OPS over 125 games. Aoki is playing every day in right field and has batted exclusively out of the leadoff spot since the All-Star break, so he should continue to help in counting stats.
MIXED LEAGUES (Yahoo: 9 percent owned, ESPN: 5.4 percent) Marte flashed some impressive potential upon his call-up from the minors in late July, but he landed on the disabled list last month with a strained right oblique. While those injuries can be pretty tricky, the 23-year-old outfielder began a rehab assignment on Tuesday night and should be back with the Pirates by the end of the week if all goes well. Marte's plate discipline (24/3 K/BB ratio in 101 plate appearances) obviously needs work, but his power-speed combo could make him worth stashing in five-outfielder formats.
MIXED LEAGUES (Yahoo: 3 percent owned, ESPN: 1.3 percent) Kratz has flown under the radar somewhat, but he's hitting .287 with nine homers and a .944 OPS in 108 at-bats with the Phillies this season. Only teammate Carlos Ruiz has a higher OPS among catchers with at least 100 plate appearances. Meanwhile, he has more home runs than the likes of Chris Iannetta, Salvador Perez, Alex Avila and Yasmani Grandal. Small sample? You bet. But he's worth a flier if you're looking for some pop in two-catcher leagues, especially with Ruiz no sure thing to return this season.
MIXED LEAGUES (Yahoo: 9 percent owned, ESPN: .1 percent) Cashner was a hot pickup on the waiver wire after he struck out nine over 6 1/3 innings against the Astros back on June 28, but he suffered a lat strain in his very next start and has been sidelined ever since. The good news is that he's expected to return to the starting rotation Friday against the Diamondbacks in San Diego. He'll be limited to about 70 pitches in his first start back and the Padres will likely monitor him carefully down the stretch, but the hard-throwing right-hander has the potential to pick up strikeouts in bunches.
NL ONLY (Yahoo: 0 percent owned, ESPN: 0.3 percent) Eaton was originally expected to stick with Triple-A Reno during the team's playoff run, but the Diamondbacks accelerated his timetable after Chris Young suffered a quad injury on Monday. The 23-year-old is off to a nice start so far, going 4-for-11 (.364) over his first two major league games while playing center field and batting leadoff. Eaton checks in at 5-foot-8 and 184 pounds and still has his share of doubters, but he was a .355/.456/.510 hitter over three seasons in the minors and has plenty of speed. The Diamondbacks didn't call him so he could sit on the bench, so he could even be worth a look in some deeper mixed formats.
NL ONLY (Yahoo: 1 percent owned, ESPN: 0.4 percent) Brian McCann received a cortisone shot in his right shoulder over the weekend and missed three straight games before returning to the starting lineup Wednesday night. The 28-year-old backstop batted just .181 in August and is hitting just .226 with a .695 OPS on the year, so the Braves are hoping his most recent cortisone shot will lead to better results down the stretch. If it doesn't, Ross is expected to get more playing time. One of the better backup catchers in the league, Ross has 22 homers and an .832 OPS in 626 plate appearances over the past four seasons. He's worth a stash wherever available in NL-only leagues.
NL ONLY (Yahoo: 1 percent owned, ESPN: 0.1 percent) Peralta notched his first major league victory Wednesday night against the Marlins, allowing three runs over six innings while striking out three and walking four. While not a fantastic outing, he should continue to get starts down the stretch now that Mark Rogers has been shut down for the season. The 23-year-old right-hander had an uneven season with Triple-A Nashville, posting a 4.66 ERA and 143/78 K/BB ratio over 146 2/3 innings, but he had a 3.38 ERA in 12 starts after the start of June. While it would be nice to see him throw more strikes, he has a mid-90s fastball that should lead to plenty of swings and misses.
AL ONLY (Yahoo: 0 percent owned, ESPN: 0 percent)Canzler, who was acquired from the Rays in late January, is expected to get a long look with the Indians down the stretch after batting .265/.328/.487 with 22 homers and an .815 OPS in 130 games this season with Triple-A Columbus. The 26-year-old doesn't really have a position and is strikeout-prone, so he has a lot to prove to shed that pesky Quad-A label, but he could run into a few homers with semi-regular playing time.
AL ONLY (Yahoo: 1 percent owned, ESPN: 0.4 percent) Remember how Parmelee went off as a September call-up last year? Well, he's doing it again. The 24-year-old is hitting .406 (13-for-32) with three homers, three doubles and eight RBI in eight games since being called up from the minors last week and should continue to get regular playing time in right field with Denard Span sidelined. He's probably gone in most competitive AL-only leagues, but he could even be worth a look in a deeper mixed league if you need help in the outfield or a CI (corner infielder) spot.