The San Francisco Giants won the opener of this three-game set 4-2 Monday night. I expect the Nats to tie the series here the Tuesday night with Tanner Roark (1-1, 3.24 ERA) on the mound. Roark has faced the Giants seven times in his career, including four times as a starter. He's never lost, going 6-0 with a 2.02 ERA and that includes a 3-0 record behind a 2.42 ERA in four games (three starts) at AT&T Park.

The Giants hand the ball to Ty Blach (1-3, 4.10 ERA) who has been tagged with six runs (five earned) on 13 hits and four walks through 11 innings in his last two starts combined. He's coming off back-to-back losses of 5-1 at San Diego and 3-1 at Arizona and the left-hander has never faced the Nationals in his career.

Nationals are 16-6 in their last 22 Tuesday games. Giants are 2-7 in their last nine Tuesday games. Nationals are 6-2 in the last eight meetings.

10* play on Washington Nationals.