The Giants will turn to rookie Dereck Rodriguez (3-1, 3.16 ERA) at 7:15 p.m. PT on Friday. That's not a bad thing: They've won the right-hander's last four outings. Rodriguez will be looking to start July the same way he pitched all of June, a month in which he posted a 3.21 ERA, struck out 29 and walked just eight batters over 33 2/3 innings. St. Louis counters with John Gant.