If Evan Gattis keeps this up, the Braves might just want to dip the big rookie’s spikes in bronze and be done with it. With the Braves down to their final out in the ninth inning, Gattis hit another dramatic, pinch-hit homer Tuesday night, a game-tying solo shot against the Twins to force extra innings at Turner Field. The Braves went on to win 5-4 on Freddie Freeman’s two-out single in the 10th, extending their winning streak to five games. Gattis leads major league rookies with nine home runs, including three homers in six pinch-hit at-bats. “He spent 3 years living in a van, I don’t think a baseball game is gonna faze him,” Braves manager Fredi Gonzalez said, referring to Gattis’ colorful past, when he spent nearly four years out of baseball and did odd jobs at various stops throughout the western United States. Jason Heyward doubled the left-center gap with two out in the 10th and Justin Upton was walked intentionally by left-hander Brian Duensing, before Freeman reached out for a full-count slider and turned it into a broken-bat single to shallow right field for the walk-off win. “It wasn’t the prettiest swing,” Freeman said, “but it got it done.” Gattis’ homer off left-hander Glen Perkins was the third homer in six at-bats as a pinch-hitter, including a game-winning two-run homer Saturday in the eighth inning against the Dodgers. Gattis leads major league rookies with nine homers and 23 RBIs in 118 at-bats. “I was trying to hit the ball hard,” Gattis said. “I don’t try to hit home runs, but sometimes they just happen.” Seven of Gattis’ homers have tied or given the Braves a lead, and four of those came in the eighth inning or later. “It’s unbelievable what he’s doing,” Freeman said. “It’s almost like when I saw him walk up there, I knew we were going to be going a little longer tonight. Once he squats down in that box, it’s almost like you know it’s going to happen. To come off the bench and be a pinch-hitter, it’s a tough task. And to do what he’s been doing, it’s just … I don’t know how to explain it. It’s incomprehensible.” Gattis homered on an 0-1 slider, a line-drive longball that drew a roar from those in a crowd of 28,663 who stuck around on a night when the game was again delayed more than an hour by rain. “I knew he throws a lot of hard stuff in, and likes to live middle-in with the fastball and slider, likes to go back foot with the slider and likes to really bore in on guys,” Gattis said. “And he’s firm, he throws hard. So I was looking for something middle-in, and I just reacted to the off-speed stuff.”