Kyle Duncan is recovering from a hamstring injury. (Photo courtesy of MLS)

Red Bulls defender Kyle Duncan and midfielder Marc Rzatkowski were listed as questionable for Sunday’s MLS Eastern Conference first-round match at the Philadelphi Union.

Both players are recovering from hamstring injuries.

Defender Amro Tarek (ankle) and midfielder Florian Valot (knee) are out of the match.

Philadelphia’s Kacper Przybylko was listed as questionable with a foot stress reaction.

The sixth-seeded Red Bulls and Union will play at Talen Energy Stadium Sunday at 3 p.m. (FS1, FOX Sports Go, Fox Deportes and New York Red Bulls Radio on TuneIn).