NEW YORK -- Trainers like their rehabbing pitchers to ease into bullpen sessions, so the timing wasn't particularly great when George Kontos went out to the bullpen at Citi Field on Friday afternoon. Noah Syndergaard, the hardest-throwing starter in the game, was airing it out about 10 yards away in the other bullpen.

Syndergaard will start Sunday, and Kontos took a step toward getting back on a big league mound when he threw a light 20-pitch bullpen session Friday. It was his first time off a mound since being put on the DL with a right flexor strain.

Sergio Romo is also rehabbing a flexor strain and he played catch for the first time. Trainer Dave Groeschner said Romo made 25 throws in the outfield while standing 60 feet away from a member of the training staff. 

"It was an easy throw for him, but it's good to have this day come to where he can start his rehab," manager Bruce Bochy.

--- Down in the minors, catcher Andrew Susac was put on Sacramento's disabled list because of continued discomfort in his right scapula. Susac had an injection in the area a few days ago and had been limited to DH duty. The favorite at the start of camp to be Buster Posey's backup, Susac missed time when his surgically-repaired wrist flared up. The wrist and a root canal cost him time last season.

"It's really been amazing and unfortunate what he's had to go through," Bochy said. "This kid was really coming into his own I thought, with being a backup. Now he's got to deal with the shoulder after dealing with the wrist. It's a shame. It's early, though, and we'll get him (back healthy). He'll be up here at some point helping us out."


--- The Mets are playing well, and while the Giants have had success at Citi Field in recent years, this is a totally different New York team. Only two of tonight's starters were in the lineup last year when Chris Heston no-hit the Mets: Curtis Granderson and Lucas Duda. David Wright was on the DL, Michael Conforto was in the minors, and Yoenis Cespedes was in the other league.

Tonight's starter, Steven Matz, was in the minors when the Giants came here last year. He'll face a team that's hitting lefties right now: Joe Panik is 13-for-33 against lefties and Brandon Belt is 6-for-20. Left-handed hitters are 6-for-14 off Matz this season.