Answer: oldpro

AnswerCrossword Clue
OLDPROVet
OLDPRONo neophyte
OLDPRONicklaus is one
OLDPROExpert
OLDPROMaster
OLDPROSeasoned hand
OLDPROPast master
OLDPROTyro's opposite
OLDPROSeasoned player
OLDPROSkilled hand
OLDPROSenior's Tour competitor
OLDPRONo newbie
OLDPROGrizzled veteran
OLDPROOne with plenty of experience
OLDPROSeasoned vet
OLDPRORookie's mentor
OLDPRORookie's teacher
OLDPROVeteran
OLDPROOne who knows the ropes
OLDPROSeasoned veteran