Reds shortstop Zack Cozart exited Monday night's game against the Dodgers after he was hit in the head by a pitch and was diagnosed with a mild concussion.

Mariners ace Felix Hernandez heads to the hill as Seattle takes on Wei-Yin Chen and the Orioles on Tuesday at Safeco Field.

Devin Mesoraco drove in three runs, including the go-ahead tally, and Todd Frazier added three more to boost Homer Bailey's solid eight-inning outing in an 8-2 Reds victory over the Dodgers in Los Angeles on Monday night.

With his performance on Monday night, Jarrod Parker continued a run that's separated him from all rookies in the last 94 years. For the A's, that meant a 6-1 win in their series opener against the Red Sox.

A Mariners team desperate for a clutch hit got a big one from Casper Wells on Monday night, as the center fielder ripped a three-run double in the seventh inning to lift Seattle to a 6-3 win over the Orioles.

A veteran and a rookie coming off arguably their best starts of the season will take the mound for the Rockies and Cardinals, with Jeff Francis and Joe Kelly starting at Busch Stadium on Tuesday.

Each day, MLB.com selects one player from each game whose performance stands out.

The Red Sox have been inconsistent this season, and so has starter Jon Lester. Similar to Lester, Bartolo Colon has been inconsistent in 2012.

Final Vote candidate Jason Hammel has been the Orioles' steady presence all season long, and while the 29-year-old right-hander ended up on the wrong side of Monday's 6-3 loss to the Mariners, he still has a chance to be named to this year's All-Star Game.

After tossing four innings last Thursday in his Major League debut, D-backs right-hander Trevor Bauer is ready to show what he's made of on Tuesday in his home debut at Chase Field against the Padres.

The Cardinals defeated the Rockies, 9-3, at Busch Stadium on Monday night, connecting on three homers and taking advantage of a handful of Rockies' miscues throughout the game.

On Monday night, second baseman Alexi Amarista went 3-for-5 and finished a triple short of a cycle to pace the Padres to a 6-2 victory over the D-backs in the first game of the series at Chase Field.

Anibal Sanchez will look to keep his mental approach in check when he takes the mound Tuesday afternoon against the Brewers as the Marlins look to bounce back after having their four-game win streak snapped Monday.

Within the National League race for the All-Star Final Vote is a choice between two of the most compelling candidates in the history of this election. The choice between sentiment and immediacy gives you players at opposite ends of the Major League spectrum: Atlanta's Chipper Jones, 40 years old, and Washington's Bryce Harper, 19.

Jeff Adcock was part of the Brewers' grounds crew for 33 years and had become a fixture in the team's bullpen.

Final Vote candidate David Freese is getting support from Jon Jay, Daniel Descalso and the rest of the team.

On a big night for Brewers pinch-hitters, Norichika Aoki perfectly placed the first pitch he saw along the first-base line, good for a go-ahead run in the eighth inning and a 6-5 Brewers win at Miller Park on Monday.