For video of Vukovic's high-five, click HERE.
For video of Bosnich's comeback, click HERE.
Bosnich, who was dropped by Chelsea in 2001 after testing positive for cocaine, marked his return to the game after a seven-year absence in spectacular fashion, saving a penalty and keeping a shutout in the Mariners 3-0 preseason victory over Sydney FC.
Coach Lawrie McKinna hailed the 36-year-old's performance and may sign Bosnich to a contract in the coming days. The Mariners will need backup for the 23-year-old Vukovic, who was sent off in his side's A-League final loss to the Newcastle Jets in February of this year.
Vukovic was protesting a decision when he appeared to violently high-five the referee's hand. Vukovic was originally suspended for nine months but after two appeals, he will only miss games through September.
Bosnich downplayed his performance in the friendly:
"One swallow doesn't make a summer -- there's still a long way to go. If today went another way I'd still say the same thing."