Kelly is the club's secondchoice right-back and a lengthy absence would be a blow - as first choice Stephen Carr continues to be linked with a move to Newcastle.
Goran Bunjevcevic was also added to the injury list and was substituted at half-time after picking up a knock and joins strikers Lee Barnard (broken collarbone), Jamie Slabber (shoulder) and midfielder Michael Brown (knee) as pre-season casualties.
Robbie Keane put Spurs ahead latching on to Sean Davis's pass and lashing his shot past Paddy Kenny.
But the home side equalised 90 seconds later when former Fulham striker Barry Hayles set up Jon Harley to beat Kasey Keller. Jonathan Forte sealed the victory in the second half with a cool chip.
