HOUSTON -- George Springer hit a tiebreaking two-run homer in the seventh inning, and the Houston Astros extended their winning streak to six with a 3-1 victory over the Baltimore Orioles on Thursday night.
Springer's shot to left off Preston Guilmet (0-1) extended the rookie's hitting streak to 11 games and was his seventh homer in his last seven games.
Springer's 10 home runs in May extended his Astros rookie record and tied him for the third most long balls by a rookie in May with Jose Canseco, Wally Joyner and Walt Dropo. Mark McGwire set the rookie record for home runs in May with 15 in 1987.
Brad Peacock allowed a run on six hits with eight strikeouts in six innings. Peacock, who was scratched prior to his scheduled start May 24 at Seattle with forearm soreness, went six innings for the fifth straight start.
Jose Altuve had three hits for Houston.
Josh Fields (1-3) threw two scoreless innings for the win, and Chad Qualls pitched the ninth for his fourth save.
Ubaldo Jimenez allowed one run on three hits with eight strikeouts in six innings. Jimenez had struggled in his last two outings, allowing 10 runs in nine innings.
Houston could not take capitalize with runners in scoring position, going 0 for 11 against Jimenez and finishing 1 for 15 with runners in scoring position with the lone hit being Springer's home run.
Nelson Cruz remained hot, extending his hit streak to 10 games with two hits, including an RBI single in the fourth that tied it at 1. The Orioles losing streak reached three games.
Jason Castro scored from third on a wild pitch by Jimenez in the second on a close play at the plate to make it 1-0. After a 4 minute, 25 second review, the call was upheld - Castro was safe.
Jimenez, who had loaded the bases with one out on two walks and a single before Castro scored, escaped the inning by inducing groundouts to Robbie Grossman and Jonathan Villar.