Lesko was promoted from Single-A Lake Elsinore to High-A Fort Wayne on Sunday, Jeff Sanders of The San Diego Union-Tribune reports.
Lesko spent the past month with the Single-A club and posted a 5.40 ERA and 1.31 WHIP in 16 innings over five outings. He spent the start of the season rehabbing from Tommy John surgery but will have a chance to compete at the High-A level late in the year.
Lesko (elbow) will make his pro debut Tuesday in the Arizona Complex League, Kiley McDaniel of ESPN.com reports.
The best prep pitcher in last year's draft class, Lesko had Tommy John surgery last spring, and he will be eased into pro action against rookie-level hitters. Assuming his stuff is back to where it was pre-surgery, Lesko should quickly ascend to Single-A Lake Elsinore.
