A’s rookie sensation Jacob Wilson advanced to the second phase of Major League Baseball’s All-Star voting after leading all American League shortstops with just over 1.8 million fan votes, MLB announced Thursday.

In phase two, vote totals will reset between the two AL shortstop finalists — last season’s MVP runner-up Bobby Witt Jr. of the Kansas City Royals, and Wilson — despite the A’s rookie’s roughly 500,000-vote lead over Witt through the first phase.

If Wilson earns the starting role in phase two, he would become the first Athletic to be a fan-selected starter since Josh Donaldson in 2014 and the team’s first starting shortstop since Bert Campaneris in 1974.

Wilson is currently second in the majors with 105 hits and a .345 batting average, only trailing New York Yankees MVP favorite Aaron Judge (.361 entering Thursday). Wilson has the 20th highest OPS in MLB at .871 — the second-highest mark for an AL shortstop, trailing the Houston Astros’ Jeremy Pena by .003 points.

After Judge earned a guaranteed starting spot by receiving the most total votes in the AL with over 4 million, the remaining starting offensive positions are up for grabs in the second phase of voting, which begins 9 a.m. Monday and ends 9 a.m. Wednesday.

Each infield position and designated hitter have two finalists vying for the starting role, while the outfield will have four contenders for the two spots next to Judge.

Once the starters are decided by the fan vote, a player’s ballot will decide a backup at each offensive position followed by two offensive selections from the Commissioner’s Office, which are often used to make sure each team has at least one representative.

The player’s ballot and Commissioner’s Office choose all of the pitchers.

Wilson vs. Witt >> The A’s shortstop led the pack after both the June 16 and June 23 voting updates, but his lead increased as voting progressed. Wilson only led Witt by 50,000 votes by the first update and led the Royals slugger by less than 300,000 on June 23.

“For Jacob to be in that category right now where he’s at, it’s a pretty great accomplishment,” A’s manager Mark Kotsay told MLB.com after he was announced as the AL shortstop vote leader on June 16. “For a player on the A’s to have that type of national attention, it says a lot about his year.”