Following an off-day, the Giants begin an eight-game road trip Tuesday in Houston. Left-hander Andrew Suarez (1-3, 4.88 ERA) pitches for San Francisco and will try to get his season back on track after allowing 15 earned runs over his previous 27 2/3 innings. Right-hander Gerrit Cole (4-1, 1.75) takes the mound for the Astros.