White Sox lose in walk-off fashion, drop series to A's

The White Sox’ 10-game trip ended in disheartening fashion Sunday. Jordan Leasure blew the lead in the 10th by allowing a two-run homer to the Athletics’ Luis Urias in a 3-2 loss. The Sox (7-21) lost the series and went 3-7 on the trip.

They took a 2-1 lead in the 10th on Luis Robert Jr.’s line-drive single to right field that scored free runner Lenyn Sosa, who had advanced to third on Andrew Benintendi’s flyout. Edgar Quero singled on a grounder to left to put runners on first and third, but Andrew Vaughn grounded into a double play to end the threat. The Sox went 1-for-10 with runners in scoring position.

In the bottom of the inning, Leasure struck out JJ Bleday before Urias’ blast with free runner Jacob Wilson on second.

Brandon Eisert started his first game in the majors as the Sox’ opener. Eisert allowed a run and two hits in one inning. Davis Martin threw six scoreless innings, allowed three hits, walked two and struck out five. Martin hasn’t allowed an earned run in his last two outings, totaling 11 innings. He gave up two unearned runs April 22 against the Twins.

The Sox scored in the first inning on Joshua Palacios’ leadoff homer. The A’s tied it in the bottom half on Brent Rooker’s double that scored Lawrence Butler from first.

Neither team scored again until the 10th.

Sosa’s hot streak

Sosa had a miserable start to the season, getting one hit in 12 at-bats in March, but has been markedly better in April.

He has hit safely in 12 consecutive starts and went 1-for-4 on Sunday.

“He’s really just been the same guy for me from Day 1,” manager Will Venable said. “[Sosa] takes good cuts and lets it go. He’s got confidence. I know there’s some chase in there, but he’s impacting the ball and a guy who’s dangerous up there.”

Farm update

Shortstop Colson Montgomery struck out twice and walked once for Triple-A Charlotte in its 13-12 victory in 12 innings. Montgomery is batting .149/.223/.255 with a .478 OPS. Despite his struggles, Montgomery remains in the Sox’ long-term plans.

“He’s a player that if you continue to challenge him, you get the best version of Colson,’’ general manager Chris Getz said. ‘‘He’s only getting better on the defensive side. Everyone points to the size, the 6-4 shortstops. But it’s been proven it can be done, and, right now, it looks like Colson can play shortstop at the major-league level.”

First baseman Tim Elko had two hits and four RBI. Designated hitter Kyle Teel had one hit, one walk and two strikeouts.

When the Sox called up Quero, he said he believed Teel would join him in the majors soon.

He spoke positively about the Sox’ budding prospect pool in the minors.

“Guys are doing good jobs, taking good at-bats; pitchers are throwing good,’’ Quero said. ‘‘I think we’re going to be good.’’