HOUSTON (AP) -- Hank Conger hit two homers, including his first career grand slam, and rookie Carlos Correa also homered twice to help the Houston Astros to a 9-2 win over the Arizona Diamondbacks on Saturday night.Dallas Keuchel (13-5) allowed two hits and two runs with eight strikeouts in six innings to extend Houston's lead in the AL West to three games.It was the major league-leading 44th multi-homer game Houston, which leads the majors with 147 home runs.The Astros were up by 1 with one out and the bases loaded in the fourth inning when Conger connected off Jeremy Hellickson (7-7) to push the lead to 7-2. Facing the Astros for the first time, Hellickson yielded seven hits and seven runs in a season-low 3 1-3 innings as the Diamondbacks saw their season-long six game winning streak snapped. It's the first time he's given up three homers this season.Carlos Gomez had three hits in his second game with the Astros since a trade from Milwaukee on Thursday.Saturday was Keuchel's 33rd straight game with at least six innings, which set a franchise record.Conger's first home run tied it 2-2 in the third inning.Correa extended the lead to 9-2 with his opposite field homer to the second row of the seats in right field off Josh Collmenter in the sixth inning.It was the first career multi-home run game for both Conger and Correa.Chris Carter drew a bases loaded walk with one out in the fourth inning to put Houston up 3-2. Jose Altuve singled after the slam by Conger and Gomez followed with a double to chase Hellickson. Gomez, who went 0-for-5 in his debut on Friday, snapped an 0-for-13 slump with that hit.He added a single before Correa's second homer.Correa launched his 11th homer of the season into the Crawford Boxes in left field to give Houston a 1-0 lead with two outs in the first inning.Jarrod Saltalamacchia's RBI single with one out in the second inning tied it at 1-all. Cliff Pennington walked to load the bases with two outs and the Diamondbacks took a 2-1 lead when Ender Inciarte walked.