What to watch for in today's games

Twenty teams will be in action today, including six during the afternoon. Here are notable things to watch for:

Harvey back where it started: NYM @ ARI, 9:40 p.m. ET

Matt Harvey, who made his big league debut against Arizona at Chase Field, will return there on Thursday for the first time since his debut.

With the Mets employing a six-man rotation, Harvey will be working on five days' rest, and some extra time off might work in his favor. The 26-year-old righty has given up 11 earned runs in his last two starts after allowing 12 in his first eight outings combined. The D-backs will counter with Jeremy Hellickson, who has won each of his last two starts. Hellickson has struggled at home, though, going 1-2 with a 6.58 ERA.

Video: CWS@HOU: Keuchel deals complete game

On your left, BAL @ HOU, 2:10 p.m. ET

Wei-Yin Chen wants some of Dallas Keuchel's winning formula. Chen has gone 1-4 this season despite logging a 3.21 ERA in his first 10 starts, and on Thursday he'll face Keuchel, the American League's Pitcher of the Month for April and May.

Keuchel gave up four earned runs in a start three times in May, but he's coming off a shutout of the White Sox in which he struck out 11. His ERA hasn't exceeded 2.00 after any start this season.

Central casting: CLE @ KC, 8:10 p.m. ET

Video: TEX@CLE: Kipnis legs out a triple to center field

The AL Central has become awfully interesting lately, and the Royals know they need to stay hot to keep pace with the surprising Twins. Cleveland, meanwhile, has enjoyed a resurgence behind the red-hot bat of Jason Kipnis, who was named the AL Player of the Month for May on Wednesday.

Trevor Bauer (4-2, 2.97 ERA) will lead the Tribe against veteran Chris Young, who's off to an incredible start. Young, who logged a 12-9 record and a 3.65 ERA in 30 games last season, has a 1.55 ERA after 11 outings (five starts) this year.

Video: LAD@STL: Wacha fans seven Dodgers over 5 2/3 frames

Play your Cards: STL @ LAD, 10:10 p.m. ET

The Dodgers handed Michael Wacha his first loss of the season on Saturday. Their reward? They have to face him again. Wacha (7-1, 2.27 ERA) has been dominant for the Cardinals this season, and he'll again face Carlos Frias, who held St. Louis to one unearned run over seven innings on Saturday.