Castillo is not in the lineup for Thursday's game against the Mets.

The Mets are starting a southpaw (David Peterson) for the second time in the series, and the left-handed hitting Castillo has been on the bench both times. Switch hitter Jose Herrera will handle catching duties for the Diamondbacks.

Fortes is not in the lineup for Thursday's contest versus the Rockies.

Fortes started two of the first three games of the series but will take a seat in Thursday's matinee. Ali Sanchez will fill in at catcher for the Marlins.

Casali is out of the lineup for Thursday's game against the Brewers, Susan Slusser of the San Francisco Chronicle reports.

After making three consecutive starts at catcher, Casali will now hit the bench for the second day in a row. Casali should continue to find himself out of the lineup with more regularity moving forward after the Giants activated No. 1 backstop Patrick Bailey (oblique) from the 10-day injured list Thursday.

Herrera will start at catcher and bat eighth in Thursday's game against the Padres.

Herrera will pick up his third start in four games behind the dish. With Willson Contreras on the injured list, Herrera is expected to be part of a timeshare at catcher with Pedro Pages rather than the Cardinals' clear-cut No. 1 option.

The Giants designated Knapp for assignment Thursday, Susan Slusser of the San Francisco Chronicle reports.

Knapp served as the backup catcher behind Curt Casali while Patrick Bailey was on the 10-day injured list. With Bailey back in tow, Knapp will head to waivers.

The Giants activated Bailey (oblique) from the 10-day injured list. He'll start at catcher and bat sixth in Thursday's game against the Brewers, Susan Slusser of the San Francisco Chronicle reports.

Bailey missed the minimum 10 days with a strained oblique and will return without having gone on a rehab assignment. The switch-hitting catcher had been slashing just .057/.089/.075 in August prior to the injury. Andrew Knapp was designated for assignment in a corresponding move.

Pages is absent from the lineup for Thursday's game versus the Padres.

Pages started Wednesday's contest but has now yielded to Ivan Herrera at catcher in three of five games since Herrera was recalled from Triple-A Memphis. Playing time between the two should be split fairly evenly while Willson Contreras (finger) is on the shelf.

Contreras went 2-for-4 with a two-run home run in Wednesday's 5-3 win over the Giants.

Contreras completed a five-run rally for the Brewers when he took Giants starter Kyle Harrison deep in the fifth inning. Contreras had been in a small rut, going 0-for-11 with three walks over his previous three games. The catcher is up to 18 homers, 76 RBI, 83 runs scored, five stolen bases and a .283/.359/.464 slash line through 128 contests this season.

Higashioka went 1-for-4 with a solo home run in Wednesday's 4-3 loss to the Cardinals.

Higashioka has two home runs over his last five games, and he's hit four long balls while batting .224 over 17 contests in August. The catcher is up to 16 homers in just 66 games this season. He's added a .228/.275/.518 slash line with 43 RBI, 26 runs scored and one stolen base over 212 plate appearances. Higashioka is likely to continue sharing the catching duties with Luis Campusano, though a hot stretch at the plate for either backstop could lead to a corresponding uptick in playing time.

Giants manager Bob Melvin said Wednesday that Bailey (oblique) is expected to be reinstated from the 10-day injured list Thursday when first eligible, Susan Slusser of the San Francisco Chronicle reports.

The 25-year-old has been sidelined since Aug. 18 due to an oblique strain, but he'll rejoin the active roster Thursday after being sidelined for the 10-day minimum. Bailey was slumping in August prior to the injury with a .057/.089/.075 slash line in 15 games, but he'll attempt to close the month strong now that he's healthy.