I was looking for Ivanov and I found an interview with Tom Hiddleston who plays a young doctor in the said play. He tells the story of how he realized he can’t be both an athlete and an actor.
… to pursue acting risked mockery from his sport-loving pals, so Hiddleston, who was also in the rugby team, kept his theatrical activities under wraps. However, this fragile co-existence couldn’t last. Things came to a head at Cambridge, when a dress rehearsal for A Streetcar Named Desire clashed with an inter-college rugby match. “I remember trying to negotiate with the captain, who was this really very practical kind of Scots guy Chris, and Katie, who was the director of the show, and I was like Katie, I have to go, I know my lines, I’ll make it up to you but I have to go and play this match,” he relates. “So anyway I ran off and played this rugby game and at half time Chris came up to me and went [he adopts a perfect Scots accent] ‘maybe next time Tom you might want to think about taking off your make up before you arrive on the pitch’. I’d turned up caked in ridiculous student drama make up!” he laughs. “That’s when I knew one of them had to go.”
Personally, I’m glad that he chose acting after that. I am not a fan of rugby after all.
You may find the entire article in the Official London Theater.