Manaea stymies SF Giants, bullpen not up to snuff in Snell’s stead

SAN FRANCISCO — This is not what the Giants anticipated every fifth day when they signed Blake Snell.

Week after week, the Giants’ worst days have been the ones on which their $62 million free-agent prize was scheduled to start. Scratched and placed on the injured list before first pitch Wednesday, the pattern only continued in an 8-2 loss to the Mets and Sean Manaea.

Watching from the dugout after being diagnosed with a strained adductor, Snell bore no blame for the mess that transpired on the field. The Giants reverted to their worst tendencies, stranding runners and running into outs, and their first game of reliever roulette went south quickly.

The loss prevented the Giants (12-14) from climbing back to .500 for the first time since the fourth game of the season or securing their first sweep. Besides a four-game skid after they evened their record to 2-2, the Giants have not won or lost more than two in a row through their first 26 games.

By the time Manaea exited midway through the fifth inning, the Giants had cycled through two bulk arms who put them in a 6-0 hole.

Sean Hjelle was bitten twice by the home run ball for three runs, and Landen Roupp allowed the deficit to balloon by another three runs.

Recalled before first pitch to take Snell’s roster spot, Roupp was one strike away from a 1-2-3 fifth inning, but Pete Alonso sent a line drive that tailed away from Thairo Estrada and under his glove for a base hit. Roupp walked the next batter and before he struck out Harrison Bader for the third out, three runs had scored.

The eight runs allowed by the mixture of Giants relievers still equaled the fewest the club has allowed on any of Snell’s scheduled start days. Counting the bullpen game that filled in for him Wednesday and Daulton Jefferies’ spot start in the fourth game of the season, the Giants fell to 0-5 in those contests. They have been outscored 55-12, amounting to a 10.47 ERA from their pitchers, compared to a 3.39 mark in all of the Giants’ 21 other games this season.

Manaea opted out of his contract in San Francisco after last season and secured a spot in the Mets’ rotation — plus a few more million and the ability to opt out again — though he didn’t exactly leave the Giants yearning for his services, even with the pregame development of Snell hitting the IL.

The Samoan southpaw — as large as ever, though with considerably less hair — held the Giants scoreless on a handful of hits but put four batters on base via walks and ran three-ball counts to another five hitters. He required 101 pitches to fall an out shy of completing five innings, but the Giants were unable to crack him.

Loading the bases with nobody out in the second, the Giants failed to get anything out of the situation when the bottom three hitters in their lineup couldn’t make a productive out, let alone a deliver a timely hit, and the next inning ran themselves into an out after the first two men reached base.

Stealing second after a leadoff walk, Austin Slater was promptly picked off when Manaea caught him leaning toward third.