What dose this sentence mean?
Hey guys, I can't understand the following sentence. Plz help me!
... Barristan Selmy, who had won his first two tilts against men thirty and forty years his junior.
Thank you!
( The whole sentence is "He overthrew Ser Andar Royce and the Marchar Lord Bryce Caron as easily as riding at rings and then took a hard-fought match from white-haired Barristan Selmy, who had won his first two tilts against men thirty and forty years his junior." )

