Sergio let Sterling take one at Watford last season when he asked.I'm sure he did get over it and I'm aware of Sergio's status but this remains a team sport and Raz was on a hattrick, so still quite selfish imo, albeit pretty harmless.
I'm sure first game of the season, roles having been newly appointed, Sergio wanted to cement his name as the taker.
Also, I didn't see any visible signs of upset from Sterling. In fact, if memory serves he had a laugh and smile about it.
If it's a team sport would it not be selfish to just want a hat trick over the coach's decision of penalty taker sure?