George Springer hit a tiebreaking two-run home run in the fifth inning to back a gutsy start from Zack Greinke as the Houston Astros avoided a sweep with a 4-3 victory over the Tampa Bay Rays in Game 4 of the American League Championship Series on Wednesday night at San Diego.Jose Altuve also homered and drove in a pair for the Astros, who extended the best-of-seven series. Greinke (1-0) allowed two runs on five hits over six innings, walking one and striking out seven in his first postseason win in 11 starts dating back to 2015.Game 5 will be played Thursday.Randy Arozarena crushed a two-run homer to remain red hot for the Rays, whose four-game winning streak came to an end. Tampa Bay played without Kevin Kiermaier (wrist).Springer pulled a 99 mph fastball down the left field line and high off the Western Metal Supply Co. building with one out in the fifth for a 4-2 Astros lead. Springer, who entered the night hitting .143 in the series, finished 3-for-4.Now operating with a two-run edge, Greinke got into a jam in the sixth when Manuel Margot and Austin Meadows hit back-to-back singles with one out. Manager Dusty Baker had closer Ryan Pressly warming but opted to stay with his veteran right-hander to face Arozarena, who struck out swinging for the second out.After Ji-Man Choi hit an infield single to load the bases, Greinke went full count on Mike Brosseau before getting the punchout on a changeup to escape the inning.