Marsch lasted less than a year at Elland Road after replacing Marcelo Bielsa in the dugout.
He leaves Leeds in 17th place in the Premier League and out of the drop zone only by virtue of goal difference.
Pressure had been building on the American for a while now as he joined Frank Lampard as managers to lose their job so far in 2023.
The crunch end of the season is approaching as managers up and down the division sweat over their future with results becoming more and more crucial as the games tick by.
Here, according to Sky Bet, we take a look at which Premier League managers could be fearing the sack and which are viewed as being relatively comfortable in their current post.
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13. Antonio Conte (40/1)
Despite not being on the touchline, Conte’s Spurs defeated Manchester City at the weekend and strengthened their claim for a Champions League spot. After a sticky few months, the Italian seems to have got his side hitting their stride in recent weeks. Photo: Clive Rose
14. Brendan Rodgers (25/1)
Leicester have put daylight between themselves and the bottom three recently and scored a very good 4-2 win at Villa Park at the weekend. Photo: DARREN STAPLES
15. Jurgen Klopp (10/1)
Liverpool suffered a 3-0 hammering at the hands of Wolves at the weekend as pressure builds on Klopp to turn his side’s fortunes around. Photo: Naomi Baker
16. Graham Potter (10/1)
A massive January spend hasn’t yet translated into results on the pitch for the Blues. Champions League qualification looks a tougher and tougher task as each week passes and will only ramp-up the pressure on Potter. Photo: Laurence Griffiths