Jamie Harnwell will tonight become the most capped player in Perth Glory's history.

The 33-year old will run out for his 242nd game with the club, surpassing the record previously held by striker Bobby Despotovski.

Harnwell is now in his 12th season with the club and against Adelaide United will become the club's games record holder but he is more focused on producing a positive result.

"(Bobby has) done so much for the club, I don't think he minds just taking one little thing off him, so he's putting on a brave face," Harnwell said.

"After the game I'll sit back and relax and hopefully look back on a nice win and be able to enjoy it a bit more. I'm still just focused on getting the win and then I'll worry about what it means to me afterwards.

"It's gonna be a special night for me and I'm just glad to still be playing."

Glory coach Dave Mitchell paid tribute to Harnwell and was delighted he was still playing consistently good football.

"He's shown he's been a true leader as well, and a great person to have around the team and the club so it's great he can actually break the record," Mitchell said.

"If he wasn't playing well he wouldn't be playing, he's reached that milestone through his own hard work but it's great for him and great for the club to have someone like that around."