Sterling was forced off in the opening minutes of Thursday's match against Manchester City with a likely hamstring issue.
Sterling couldn't make it five minutes before he tweaked his hamstring in an awkward challenge with John Stones. It's a tough break for fantasy players, as Sterling was probably most in form for Chelsea, scoring and assisting the last two matches. Pierre-Emerick Aubameyang came on for him Thursday and could see some starts if Sterling has to miss time.
Pulisic was forced off with an injury in the 22nd minute of Thursday's match against Manchester City.
Pulisic was the second player to go down for Chelsea on Thursday in the first 20 minutes, which is never a good thing when playing Manchester City. Pulisic has a history of injury problems and the hope is that this doesn't linger into a month-long absence. Carney Chukwuemeka came on for him Thursday despite playing just 46 minutes this season.
