May trades are rare in MLB. The stars have to align. And on Saturday, the Giants’ constellation coordinated perfectly with the Guardians’ nebula, as the clubs agreed to a trade that sent two-time Gold Glove-winning catcher Patrick Bailey to Cleveland in exchange for the No. 29 pick in the 2026 MLB draft and Guardians’ left-handed pitching prospect Matt Wilkinson, San Francisco announced . The Giants’ urgency, amid a disappointing 15-23 start lined up perfectly with the first-place Guardians’ desire to double down on their run-prevention strategy. Here’s how both teams fared in the deal. Giants: B- While perhaps a trade was unforeseen—shout out to the ever-unpredictable Buster Posey—it’s not too surprising that Giants’ brass was ready to move on from Bailey, as great a defender as he is. It’s difficult to overstate just how poor a hitter Bailey has been this season.…