HOUSTON -- Jeremy Pe?a pounded his chest as he approached second base, later saying his trip around the bases Sunday afternoon was a blur. He was mobbed by his teammates at home plate and turned the mood inside the Astros¡¯ clubhouse 180 degrees from where it was headed moments earlier.?

Pe?a, the rookie shortstop who took over for Carlos Correa, crushed a pitch from Blue Jays closer Jordan Romano and sent it 425 feet over the wall in straightaway center field for a two-run walk-off homer in the 10th inning that sent the Astros to an 8-7 win in the series finale at Minute Maid Park.?

¡°It was a blur,¡± he said. ¡°I kind of ran the bases a little fast, but it was a great moment.¡±

The homer, the third of Pe?a¡¯s young career, enabled the Astros to avoid a three-game sweep, snapping a four-game losing streak at home as they prepare to hit the road to face the Rangers on Monday. He¡¯s the first Astros rookie to hit a walk-off homer since Brian Bogusevic on Aug. 16, 2011, against the Cubs.

¡°That was a big home run by ¡®La Tormenta,¡¯¡± Astros manager Dusty Baker said. ¡°Boy, we needed that one badly to get off the losing streak and have a happy flight on the way to Texas.¡±

Pe?a has enjoyed early success in the Astros¡¯ lineup, but he entered Sunday in an 0-for-10 funk that caused Baker to drop him to eighth in the order from the leadoff spot, where he had batted the previous four games with Jose Altuve out. Pe?a was 1-for-13 in those games and was riding an 0-for-14 slump after going 0-for-4 in his first four at-bats Sunday.

¡°Something I learned and I picked up in this game is separating your at-bats, separating pitch by pitch, separating your defense from your hitting,¡± he said. ¡°So that at-bat was a clean slate. I was just going up and trying to help the team.¡±

Romano, who had converted a club-record 31 consecutive games for the Jays, struck out Aledmys D¨ªaz to start the 10th with the automatic runner at second base as the tying run. Pe?a took the first two pitches for balls before ripping a 96.6 mph fastball from Romano and sending it over the wall in center.

¡°Super tough guy to do it against,¡± third baseman Alex Bregman said. ¡°He¡¯s one of the best. He had 31 in a row. They got a really good team over there and to come back and battle and win today with that swing of the bat was huge.¡±

Pe?a¡¯s early body of work has been solid. He seems poised and comfortable on the field and is hitting .260/.333/.540 through 14 games. Even during his slump, he¡¯s found a way to get on base. Pe?a has reached base in a team-high nine consecutive games.

¡°He¡¯s very confident, though, and he knows his ability, and he¡¯s very level-headed,¡± Bregman said. ¡°He doesn¡¯t get too high, doesn¡¯t get too low and stays focused. That¡¯s a big swing for our team.¡±

Indeed. The Astros¡¯ win probability was only 19.4 percent after D¨ªaz struck out against Romano to start the 10th. The next two spots in the order --?Pe?a and catcher Mart¨ªn Maldonado --?were a combined 0-for-6 with three strikeouts heading to the 10th.??

¡°That guy¡¯s a tough pitcher,¡± Baker said. ¡°It¡¯s the first [save] he had blown. [Pe?a] got one of the best. He also got his first walk-off hit, walk-off homer. That was great for our team, great for our city, great for the fans that stuck around to see that ballgame. Boy, that will hopefully start us on a winning streak here.¡±