Tempers frayed early on in Chelsea's afternoon match against Arsenal today, with Arsene Wenger and Jose Mourinho going toe-to-toe on the touchline with just 20 minutes on the clock.
The two managers have a long-standing rivalry dating back to Mourinho's first spell in the Premier League with Chelsea.
Arsenal were looking to gain revenge for their 6-0 drubbing at the hands of Chelsea last season, and it appears as though Wenger was a little too eager to do just that after he shoved Mourinho early on in the clash at Stamford Bridge.
The Arsenal boss was incensed at a tackle on £32 million summer buy Alexis Sanchez from Chelsea defender Gary Cahill which earned him a yellow card. Wenger seemingly thought referee Martin Atkinson should have shown him a red card instead, and tempers boiled over when he confronted Mourinho over the challenge.
Wenger angrily approached his Chelsea counterpart on the touchline before raising his hands to shove the Special One. Referee Atkinson was soon across to reprimand the pair, although tensions were high as Arsenal sought out an equaliser following Eden Hazard's opener from the penalty spot. Diego Costa finished the game late on after latching onto a Cesc Fabregas pass.
The ill-feeling on the touchline appeared to spill over onto the pitch when Sanchez seemingly took a swing at Branislav Ivanovic.
As things stand Chelsea remain top of the Premier League table after their impressive start to the season. Arsenal have struggled to reach the same heights so far this term, and battled to a draw against north London rivals Tottenham last week, although they did claim a much needed victory against Galatasaray in mid-week.