Mariners manager Scott Servais said that Taijuan Walker (foot) will be reevaluated after he makes his first start on a rehab assignment.
Walker tossed a three-inning simulated game on Wednesday. He will have a bullpen session on Friday and (assuming no setbacks) could begin a minor league rehab assignment on Monday. Servais said that once he makes that start, the team will reevaluate to determine whether he is ready to be activated from the disabled list. Right foot tendinitis has plagued him this summer. He hasn't pitched since July 1.
Rockies activated LHP Chris Rusin from the 15-day disabled list.
Rusin wound up missing six weeks with a left shoulder strain. He returns to a long relief role.
Rockies placed RHP Jason Motte on the 15-day disabled list with a right rotator cuff strain.
Motte had allowed eight earned runs on nine hits and three walks over his last 4 2/3 innings out of the Colorado bullpen. The right-hander has been battling shoulder issues since spring training.
Alex Dickerson homered for the fourth consecutive game Wednesday as the Padres beat the Blue Jays by a score of 8-4 at Rogers Centre in Toronto.
Dickerson went deep for a solo shot in the top of the eighth inning, becoming the first Padres rookie to homer in four straight games. The 26-year-old outfielder has been on an absolute tear over the last week and he has a clear path to regular playing time down the stretch with Melvin Upton now out of the picture in San Diego. Buy, buy, buy.
Luis Perdomo yielded four earned runs in five innings Wednesday but the Padres beat the Blue Jays.
Perdomo was actually pitching very well until the bottom of the fifth inning, when Devon Travis drew a walk, made it to second base on a wild pitch, and then later scored on a sacrifice fly. Toronto would rally for three more runs against Perdomo in the bottom of the sixth, but San Diego was able to hold off that late charge. Perdomo, 23, is 5-4 with a 6.89 ERA and 1.81 WHIP in 82 1/3 innings this season.
R.A. Dickey allowed seven runs -- six earned -- over 5 2/3 innings Wednesday in a loss to the Padres.
Dickey walked four and gave up four hits, including a two-run homer to Adam Rosales in the top of the third inning and a solo homer to Brett Wallace in the top of the fifth. The veteran knuckleballer is 7-12 with a 4.66 ERA and 1.34 WHIP in 131 1/3 innings this season.
Blake Treinen earned his first career save on Wednesday afternoon against the Indians.
Treinen was called into the game with two men on and one out in the bottom of the ninth inning and promptly induced a threat-ending doubleplay from Roberto Perez. Jonathan Papelbon was getting the day off after blowing his second consecutive save on Tuesday night. Nationals manager Dusty Baker hinted in his postgame press conference that he could make a change at closer, and Treinen would probably be in the running to replace him. The 28-year-old right-hander owns a 2.01 ERA and 37 strikeouts in 40 1/3 innings this season.
Giants SS prospect Christian Arroyo supplied three hits and a stolen base Tuesday in a win for Double-A Richmond.
He scored four of the Flying Squirrels' 10 runs while adding a double and two singles. Arroyo has crushed the ball over his last 10 games, hitting .366 with seven RBI during that span. Arroyo hasn't hit for much power (only two homers in 91 games), but he leads the Eastern League with 30 doubles and owns a team-best .285 batting average over 361 at-bats this season.