Rex Brothers hasn't allowed a run since April 6.
And that run, surrendered to the Padres, is the only blemish on his campaign to this point. Brothers has six holds, a 0.47 ERA, 1.14 WHIP and 20/7 K/BB rate over 21 appearances. He's been Colorado's best reliever, but closer Rafael Betancourt is also pitching well for the 24-21 Rockies. Brothers could be Colorado's full-time closer next season, but he likely won't earn saves in 2013 barring injury.
Craig Stammen was knocked around the park by the Giants Monday, allowing two runs on seven hits over 2 2/3 innings.
Washington didn't have much of a chance after Zach Duke spotted the Giants an early lead, but Stammen's poor performance sealed their fate. Stammen stranded a handful of runners to limit the damage this game had on his ERA, which jumped from 2.25 to 2.78. As a long reliever, Stammen has fulfilled expectations, adding a 1.19 WHIP and 23/5 K/BB rate over 22 2/3 innings.
Pedro Strop was slapped with a loss Monday against the Yankees after allowing two runs over two-thirds of an inning.
Called upon to begin the 10th inning, Strop gave up consecutive doubles to Ichiro Suzuki and Vernon Wells before recording a pair of outs. He was asked to intentionally walk Robinson Cano before the O's tabbed Brian Matusz, who allowed an inherited runner to score. Strop's stuff is absolutely lethal, but his post-WBC efforts haven't impressed. The 27-year-old holds a 5.19 ERA and 1.44 WHIP over 21 appearances. He's got closer's stuff, but is nowhere close to being trusted in the ninth inning.
Reserve outfielder Logan Schafer has posted a .455 OPS for the Brewers this season.
Although Shafer at times looks like a high-schooler at the dish -- slashing .182/.250/.205 -- he's actually registered a positive WAR, due to the three runs he's estimated to have saved in the field, per Baseball Reference. That's good enough to keep a roster spot in the majors, of course, but glove-only subs will have to wait until fantasy baseball evolves to include advanced defensive metrics to have any value even in the deepest of leagues.
Eric Hinske is batting .188 with a .548 OPS over 34 plate-appearances.
The Diamondbacks handed Hinske a one-year, $1.35 million contract in December after he batted just .197/.272/.311 with two home runs and 13 RBI in 91 games last season for the Braves. The former Rookie of the Year, now 35, is reaching the end of a respectable 12-year career.
Jack Hannahan grounded out as a pinch-hitter in Monday's victory against the Mets.
The Minnesota native is miscast as a pinch-hitter and is no threat to Todd Frazier's job, despite the latter's struggles. Hannahan is known for his glove, not his stick, but Cincinnati likely hoped for more than a .222/.317/.278 slash line when they inked him to a two-year, $4 million contract over the offseason.
Ty Wigginton went 0-for-2 with a walk in Monday's loss to the Padres.
He was also caught stealing. Wigginton doesn't draw many starts, and he doesn't do much with them when he does, slashing .194/.286/.226 with no homers or steals and one RBI through 31 at-bats. St. Louis doesn't often make mistakes, but the two-year, $5 million deal they gifted Wigginton in mid-December certainly qualifies.
Tony Sipp's walk rate (6.0) and strike-to-walk rate (1.38) are the highest and lowest of his career, respectively.
Sipp's only pitched 12 inning over 18 appearances, so it's not time for Kirk Gibson to panic, but the left-hander will be playing with fire if he can't iron out his control issues. His 3.75 ERA is better than last season's 4.42, but Sipp's peripherals suggest that he was a better hurler in 2012. The improvement in ERA is entirely tied to Sipp keeping the ball in play. He's surrendered only one bomb after giving up nine last year.