Pete Alonso’s free-agent saga is over, and he ended up right where he started. The first baseman agreed to a two-year, $54 million contract with the Mets, The Post’s Jon Heyman reported.

In a surprise development, the fan-favorite first baseman reached a two-year, $54 million contract to return to the Mets.

Three other Scott Boras clients recently opted out of short-term deals after one year, then struck belated free-agent riches.