Roberto Perez will take his place behind home plate for the second time in the last three games. Neither catcher has emerged as an offensive threat, so they'll likely continue to split duties down the road.
It's the second day off in the past three games for the young catcher, as Sandy Leon gets the start behind the plate. Vazquez is hitting just .205/.416/.211 this month, a contributing factor to his stagnant playing time.
The All-Star catcher looked more like himself after falling into a 3-for-20 slump following a minor ankle injury. Despite the Giants struggling as a whole, Posey is putting up numbers that we haven't seen since his MVP season in 2012. The 30-year-old has always been a great contact hitter, but he has been providing more thump at the plate this season with a .537 slugging percentage and .194 isolated power rating (highest marks since 2012). The only lacking part of his fantasy game right now is a low RBI total (28) for a hitter with his lineup placement, but there is nothing the slugger can do about teammates not getting on board in front of him.
Despite clubbing two homers in his last four games, Contreras will head to the bench as Miguel Montero takes over behind the dish. The 25-year-old, who is slashing .249/.311/.423 in 64 games (222 plate appearances) this season, should be back in the lineup for Saturday's matinee contest.
Narvaez will get the day off for the fourth time in the last five days as Kevan Smith sets up behind the plate for the series opener. Smith put together a 3-for-5 day with one RBI on Thursday, which marked the third time in his last five appearances that he's collected multiple hits. As long as Smith continues to hit like this, there won't be as much time for Narvaez in the lineup.
The injury may explain Moore's recent skid at the plate following his solid start to the season. The 33-year-old is hitting just .114/.205/.200 over his last 11 games after batting .295 with nine RBI in May. It's unclear as to the severity of the ailment at this point, but anything extensive would certainly put a damper on an otherwise productive year.
Maxwell commemorated his return to the big-league club with his first three-hit day of the season, raising his line with Oakland to .304/.385/.348 over 26 plate appearances. The 26-year-old backstop makes for an intriguing fantasy prospect to monitor in the immediate future, as he projects to see a solid amount of playing time behind the dish now that Stephen Vogt has been jettisoned.
The blast, d'Arnaud's eighth of the year, snapped a 10-game homerless drought for the backstop. His .226/.293/.459 slash line in 44 games is underwhelming, but at least the 28-year-old is on pace to top his previous career high of 13 home runs.
It wouldn't be surprising to see Diaz get the bulk of starts over Stewart, though it sounds as if Hurdle has a plan mapped out. Diaz went hitless in four at-bats Thursday, lowering his batting average to .276.
He has yet to tap into the power he's shown in recent years, but Gattis is making solid contact and drove in multiple runs for the second consecutive game. Still, his irregular playing time makes him something of a frustrating commodity in shallower formats given his lack of home run output to this point. Gattis got the start behind the plate for Thursday's matinee game while Brian McCann got the day off, but Gattis could be headed back to the bench for Friday's series opener in Seattle.