ATLANTA -- Move over, Iron Horse. Make room for A-Rod.

In one of the more dramatic moments of his Yankees career, Alex Rodriguez not only tied a game, he matched Lou Gehrig for the most grand slams in baseball history with his line drive over the left-field fence in the eighth inning of Tuesday night's 6-4 win at Turner Field.

The shot was Rodriguez's 23rd career grand slam and 10th homer of the season. It also wiped out the four-run lead the Atlanta Braves had built against Yankees starter CC Sabathia.

Rodriguez's homer came on a 3-2 pitch from reliever Jonny Venters, a two-seam fastball clocked at 93 mph. With Derek Jeter (single), Curtis Granderson (single) and Mark Teixeira (walk) aboard, Rodriguez -- who had been ahead 3-0 in the at-bat before taking a strike and fouling off two more -- sent the pitch on a low line into the left-field seats, drawing a roar from the Turner Field crowd. The Yankees scored two more runs in the inning en route to the come-from-behind victory.

Rodriguez's homer was caught on the fly by 15-year-old Randy Kearns, a lifelong Yankees fan attending his first live Bombers game. Kearns returned the ball to A-Rod in a postgame meeting and received a signed ball, a bat and jersey.