WATCH: Guus Hiddink reveals that typically rational Diego Costa punched a hole in tunnel wall

This is a shocking departure from form.

The usually level-headed Diego Costa had an uncharacteristic temper tantrum at full time after Chelsea were pegged back to 2-2 during Wednesday night's Premier League tie with West Brom. The Blues twice took the lead but had to settle for a point after James McClean scored an 86th minute equaliser at Stamford Bridge. And interim Chelsea boss Guus Hiddink has revealed that Costa took out his frustrations as he left the pitch, with reports that the Spanish international had punched a hole in the tunnel wall. https://www.youtube.com/watch?v=fKl9bUGpB8E Costa was booked in the game for a late challenge on Craig Gardner, his sixth of this league campaign. "How close to the line was he? I think there was little space left," Hiddink said in his post-match press conference. "But no, they were challenging each other. The defenders, and that's their right, were provoking him a little bit, but in a mutual way. Those clashes are normal. I didn't see any bad things. "A hole in the tunnel wall? We can repair that easily, it's not a problem. "He's an emotional guy and I like that very much. If you have to push players it's difficult to survive in the Premier League, but if you have to control them it's much better."