Davis Cup is totally different to playing in the regular tournaments. I wish Grisha all the best. This will test his physical ability as Davis Cup is best of 5 sets and looking at the schedule, he will be playing on all 3 days which takes a lot out of you. Im hoping that Bulgaria can clinch the tie in the doubles and then Grisha can rest and let one of the other boys play
Good luck Grisha and Bulgaria! We are with you!