Rapid Reaction: White Sox 2, Red Sox 1

CHICAGO -- The Chicago White Sox pulled off their second consecutive walk-off victory, beating the Boston Red Sox 2-1 on Tuesday.

How it happened: Alexei Ramirez scored the winning run on a throwing error by Red Sox shortstop Xander Bogaerts that first baseman Mike Carp was unable to dig out of the dirt. Rookie starter Erik Johnson gave up only one run on a home run by Daniel Nava in the fourth inning. Former White Sox starter Jake Peavy went six innings, giving up a run and three hits. That run came on Adam Dunn's third home run of the season, a blast into the right-field seats in the second inning. Peavy was over the 50-pitch mark after two innings but settled down to throw 113 in his six innings.

What it means: The rotation's next generation met the former generation and Johnson was able to deliver the best outing of his young career. The right-hander went toe-to-toe with Peavy by setting a career high with nine strikeouts and matching a career best with 6 2/3 innings. In two starts against the White Sox since joining the Red Sox, Peavy has given up a combined three runs over 13 innings.

Outside the box: White Sox manager Robin Ventura issued an unsuccessful replay challenge in the second inning. Jose Abreu appeared safe at first base when the Red Sox's Mike Napoli seemed to pull his foot off the bag, but replays were inconclusive and Abreu remained out. The play was even more costly for the White Sox when Dunn followed with his solo home run -- which would have produced two scores had the call been overturned.

Offbeat: Peavy and Dunn were very close when they played together for the White Sox. So Dunn's home run will give him bragging rights when they hang out again. The next time up, Peavy walked his buddy. And to let him know he was keeping an eye on him, Peavy threw over to first base, twice, even though Dunn was essentially standing on the bag the whole time.

Up next: The White Sox will send left-hander John Danks (1-0, 4.15 ERA) to the mound Wednesday against the Red Sox in the middle game of the series. Boston will counter with left-hander Clay Buchholz (0-1, 6.97) in the 7:10 p.m. CT start from U.S. Cellular Field.