Georgi isn't exactly nervous when play starts (he's played long enough and with enough different sets of players that this is really just another match), but he's a little anxious about how he'll perform and whether the team/fans/owners will like him.
He's a conservative player in general and even more so in the first hour or so of the match while he studies his opponents and gets into the groove of working with Lex in a real match situation. They've had just barely enough time practicing together to make them into a team despite their very different styles, and he has to fly harder than he likes to catch up to her, and misses a few hits he should really have been able to get just because he's trying too hard. It doesn't shake his confidence, but it does make him more determined to come back.
Once he gets into the rhythm of it after about an hour of play, he relaxes, eases up, and starts to really show what he can do. Georgi's playing style is calm, methodical, strategic, and tireless. He's a geometry nerd with a bat, basically, and he approaches the Bludger game like a pool player does, lining up shots carefully and accurately with devastating timing. It's not exactly a flashy style of play and he doesn't take daredevil risks like Lex (this is why he rarely gets injured and has a ton of endurance, he can just keep on going like this forever), so it takes someone who really knows what they're looking for to notice just how good he is.
He and Lex had the goal of knocking Wendy Sloo off her broom, which they obviously don't manage, but they keep her off-balance all match. :) He also makese a point of breaking up opposing Chaser formations as much as possible, so they never really get momentum going. And he plays mostly right-handed in this match, but his signature move of tossing his bat over to his left hand just in time to make a difficult hit gets pulled out to great effect several times, which gets some surprised and excited cheering from the Magpies crowd.
(More later, I want to see what happened with the injuries on the pitch and when/how Lex gets knocked out before I comment on the late match <3)