Houston at Seattle

The Mariners used three homers in a 6-3 victory over the Astros on Saturday and look to sweep the three-game series Sunday. Houston is on a 2-9 run on the road and has to go with young erratic righty Vincent Velasquez (4.66 ERA). Velasquez has walked 6 batters in 9+ innings, a terrible ratio, and this is his first road game. The Astros are 2-7 against a left-handed starter and face Mariners southpaw J.A. Happ (3.79 ERA). Happ is 3-0 with a 3.48 ERA in five career starts against Houston, his former team. He is 2-1 at home with a sizzling 1.88 ERA in Safeco Field, and the Mariners are 6-2 against the AL West. Play Seattle.