a total of 24 matches and 48 match balls starting already in 2000!
but, if we only take GS matches:
2002 AO vs Haas (Fed 20, Haas 23)
2005 AO vs safin (fed 23, safin 25)
2010 USO vs nole (fed 29, nole 23)
2011 USO vs no1e (fed 30, no1e 24)
2018 W vs anderson (fed 36, kevin 32)
2019 W vs no1e...