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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9. Eddie Howe (100/1)
Howe has guided Newcastle to 4th place and into their first major cup final since 1999. Newcastle have built on a great end to last season and have tasted defeat just once in the league this campaign. Photo: OLI SCARFF
10. Thomas Frank (80/1)
Brentford currently sit in 7th place and have taken 33 points from 21 games. It has been another wonderful season for the Bees and one Frank deserves full credit for masterminding. Photo: Ryan Pierse
11. Steve Cooper (66/1)
Cooper has overseen a wonderful turnaround at the City Ground with Forest now sat six points clear of the relegation zone. They are turning into a very hard side to beat and credit for that has to go to Cooper. Photo: Clive Mason
12. Patrick Vieira (50/1)
The Eagles haven’t won in their last six outings in all competitions but it’s clear Vieira retains the support of the board and supporters at Selhurst Park. Photo: Michael Regan