Tyler Roberts' second-half penalty earned Walsall a 1-1 draw at MK Dons in a low-key contest between two teams in the bottom half of League One.The Saddlers have now drawn their last four games in the league and they shook off a poor first-half display to eventually share the spoils.MK Dons broke the deadlock in the 24th minute when Chuks Aneke made the most of some loose marking to nod Ousseynou Cisse's free-kick into the bottom corner.Captain Alex Gilbey then almost added a second for the hosts when he headed Aneke's cross over, with Walsall providing a minimal threat in the first half.However, they were handed a lifeline on 58 minutes thanks to a clumsy challenge from behind in the area by Ethan Ebanks-Landell on Roberts, who made no mistake from the spot.Ed Upson then sent a free-kick just over before Roberts forced Lee Nicholls into a good save from a tight angle after he had got away from Scott Wootton.