Sean Murphy

My selection is on the 'under' between Arizona and San Diego at 9:10 pm et on Wednesday.

I'll back the 'under' as we see a matchup of two starting pitchers in excellent form do battle at Petco Park on Wednesday night. Robbie Ray has been lights out for the D'Backs, not just of late, but this season in general. Over his last three starts he has gone 3-0 with a 1.31 ERA and 0.73 WHIP. Note that he has posted a sparkling 1.33 ERA and 0.93 WHIP on the road this season. Meanwhile, Padres starter Dinelson Lamet is winless over his last three outings, but has posted a solid 2.00 ERA. Here at home, Lamet has recorded a 3.59 ERA and 1.04 WHIP. His home starts are averaging just seven total runs per contest. Take the under (10*).

My selection is on Chicago over Tampa Bay at 7:10 pm et on Wednesday.

I'll back the Cubs in St. Petersburg on Wednesday night. Jon Lester has worked six innings in each of his last two starts, both resulting in Cubs victories. The Cubs are 7-5 when he takes the ball on the road this season, giving him well north of five runs per start. Blake Snell will counter for Tampa Bay. After a solid stretch, he has now failed to work six innings in his last two starts, and checks in with a 1-3 home record, where his ERA has crept above four. The Rays are giving him less than four runs per start to work with at Tropicana Field. The Cubs are hot and the Rays are not. Take Chicago (10*).

N.L. West Game of the Year. My selection is on Colorado over San Francisco at 3:45 pm et on Wednesday.

I'll back the playoff-hungry Rockies at AT&T Park on Wednesday afternoon. Tyler Chatwood will take the ball for Colorado. His numbers are certainly pedestrian this season as he's gone 8-12 with a 4.57 ERA and 1.45 WHIP. However, he has pitched well over his last couple of starts, giving up just one earned run in 10 2/3 innings of work. The Rockies are a perfect 3-0 when Chatwood takes the hill since he rejoined the rotation earlier this month. Also note they've won his last seven starts against the Giants. San Francisco will turn to Matt Moore, who certainly hasn't looked comfortable pitching here at home, going 3-9 with a 4.48 ERA. The Giants have given Moore fewer than three runs per start to work with in this park. Moore has lasted at least six innings just once in his last three starts. The Giants are winless in his three previous outings against Colorado this season. Take Colorado (10*).