Michael Alexander

Rating:  2 Units

Pena is coming off the best performance of his career on Friday, when he pitched the final seven innings of a combined no-hitter against Seattle. The 29-year-old followed Taylor Cole to the mound in that outing but will start the contest this time as he aims for his third straight victory. Pena beat the Astros on July 5, when he gave up two runs and three hits over four innings, and is 1-1 with a 3.18 ERA in three career appearances against the club. Albert Pujols recorded three RBIs in each of the first two games of the series as the Angels scored 16 runs against the Astros, who have dropped four of their last six contests.

Rating: 2 Units

Ray turned in another impressive outing on Friday, holding St. Louis to one run and two hits while registering eight strikeouts over 6 1/3 innings in a 4-2 victory. The 27-year-old Tennessean has struck out 145 batters over 111 frames in 20 starts and has worked at least six innings in eight of his last nine outings. Chavez gave up seven runs - six earned - and seven hits over 5 1/3 innings against Houston on Friday. The 35-year-old Californian has gone 1-2 with a 5.16 ERA in four outings since rejoining the starting rotation. Chavez owns a 4.67 ERA in 12 career games (one start) versus Arizona and has struggled to contain Adam Jones (6-for-14, home run).