Goals from Will Grigg and Dilan Markanday had put the excellent Spireites in a commanding position after 20 minutes before Daniel Kanu headed one back before half-time to give the visitors a lifeline against the run of play.
The Saddlers had momentum after that and they equalised on the hour when substitute Albert Adomah headed in from close-range and they looked the more likely to side go on and win it, until a late rally from the Blues, but the points were shared between the promotion hopefuls.
The result leaves Chesterfield in eighth, four points behind Walsall in seventh.
Here are our player ratings from the game...
1. Zach Hemming 6
Took no chances when he tipped over a looping cross from Barrett which was potentially dipping under the crossbar and took a big catch right on half-time to take the pressure off in torrential rain. Beaten by two close-range headers. Photo: Tina Jenner
2. Sam Curtis 6
Nothing flashy, just nice and steady, got forward when he could. Photo: Submitted
3. Kyle McFadzean 5
A mixed afternoon in which he did lot of good stuff but he also got beaten in the air for both of Walsall's goals by Kanu and Adomah. Photo: Brian Eyre
4. Sil Swinkels 7
Another strong outing. Won his headers and mopped up with no fuss. Almost netted down the other end but had the ball glanced away from him at the last second. Looks too good for this level. Got a bright future. Photo: Tina Jenner