Antonio Conte has managed a first in his career as Chelsea manager in his side's match against Swansea — a trip to the stands.
Conte took exception to a call made by referee Neil Swarbrick late in the first half and, after screaming at fourth official Lee Mason, was told he could watch the rest of match away from the touchline.
Assistant Angelo Alessio took over for the remainder of the contest.
With the game scoreless in the 42nd minute, Chelsea attacker Willian appeared to have his cross deflected out off a Swansea defender Alfie Mawson for a corner.