Pete Alonso stands alone — and the man he passed is now congratulating him. The Mets slugger set the franchise’s all-time home run record on Tuesday night at Citi Field with his 253rd career blast, and Darryl Strawberry, who now sits in second place, had plenty of nice things to say to Alonso.

NEW YORK — After finally hitting home run No. 253, a new Mets record, first baseman Pete Alonso stood on a bench on the top step of the dugout and waved his helmet. Standing beside him, Mets manager Carlos Mendoza looked up at his slugger, soaking in all the love from the fans. Mendoza captured a snapshot of Alonso’s wide, boyish smile in his mind.

After flirting with the possibility for weeks, Pete Alonso finally stood alone as the Mets’ all-time home-run king when he slugged his 253rd career homer, surpassing Darryl Strawberry for the most in Mets history.