Match ends, Chesterfield 1, Walsall 4.
Walsall responded to the sacking of Sean O'Driscoll by beating Chesterfield for their first win in seven matches.
Chesterfield led on 19 minutes from James O'Connor's own goal, only for another own goal, sliced in off Tom Anderson, to level it by the break.
Sam Mantom put Walsall in front before Chesterfield had Dion Donohue sent off.
But two goals in four minutes from on-loan Jordy Hiwula, who ran clear to score, and midfielder Mantom sealed victory against the 10-man Spireites.
In their first game under new boss Jon Whitney, Walsall's 10th away league win of the season moved them back to within three points of second-placed Wigan Athletic.
Mantom drilled home his first from the edge of the box on 57 minutes, before adding his second on 75 minutes when he rounded off another precise passing move.
But the celebrations turned ugly when players from both sides clashed, producing a red card for Donohue and yellows for three other players.
Walsall boss Jon Whitney told BBC WM:
"It caps off a really good week. If you think back to last Sunday when I found out after Sean's dismissal, straightaway I'm thinking: 'Right, how can I get the lads ready for this?'
"We started off just thinking about us, respecting the opposition but it was all about getting back to that early season form where we were really fluid.
"I don't think Chesterfield had enough for us, Our movement was fantastic and we came out deserved winners in the end."
- 25TalbotSubstituted forJohnat 69'minutes
- 4HirdBooked at 60mins
- 19DonohueBooked at 61mins
- 24BanksBooked at 59mins
- 10O'SheaSubstituted forEbanks-Blakeat 73'minutes
- 11NovakBooked at 68minsSubstituted forHumphreysat 79'minutes
- 3TaylorSubstituted forFordeat 79'minutes
- 8MantomBooked at 60minsSubstituted forMorrisat 88'minutes
- 9BradshawSubstituted forLalkovicat 84'minutes
- Ross Joyce
- Shots on Target
Second Half ends, Chesterfield 1, Walsall 4.
Sylvan Ebanks-Blake (Chesterfield) wins a free kick in the attacking half.
Foul by Adam Chambers (Walsall).
(Chesterfield) wins a free kick in the attacking half.
Foul by Bryn Morris (Walsall).
Attempt saved. Jason Demetriou (Walsall) right footed shot from the centre of the box is saved in the bottom right corner.
Foul by Connor Dimaio (Chesterfield).
Rico Henry (Walsall) wins a free kick in the defensive half.
Foul by Tom Anderson (Chesterfield).
Paul Downing (Walsall) wins a free kick in the defensive half.
Substitution, Walsall. Bryn Morris replaces Sam Mantom.
Connor Dimaio (Chesterfield) wins a free kick in the attacking half.
Foul by Sam Mantom (Walsall).
Substitution, Walsall. Milan Lalkovic replaces Tom Bradshaw.
Attempt missed. Ritchie Humphreys (Chesterfield) left footed shot from the centre of the box is close, but misses the top right corner.
Corner, Chesterfield. Conceded by James O'Connor.
Attempt saved. Oliver Banks (Chesterfield) right footed shot from outside the box is saved in the centre of the goal.
Substitution, Chesterfield. Ritchie Humphreys replaces Lee Novak.
Substitution, Walsall. Anthony Forde replaces Andy Taylor.