3. TORONTO RAPTORS v BOSTON CELTICS (NBA) 4.15am, ESPN

Wake up, sleepy heads! Wipe that sleep from your eyes and grab yourself a cup of tea. Or better yet, do an all-nighter from your Christmas festivities and stay awake for tip off because this is one contest you won't want to miss. Two of the best teams in the competition lock horns in the first of five NBA games. It promises to be another epic eastern conference encounter as the Raptors (21-9) host the Celtics (20-7) with the likes of Kyle Lowry, Serge Ibaka, Kemba Walker and Jayson Tatum all in action.

4. PERTH SCORCHERS v SYDNEY SIXERS (BBL) 7.10pm, Fox Cricket/Seven

If you just can't get enough of your cricket on Boxing Day, this is the fixture for you. The Scorchers host the Sixers at Optus Stadium shortly after stumps at the MCG. Surely 12 hours of non-stop cricket action will serve as a big enough fix, even for the most rabid fans of the sport. The Big Bash will certainly provide a change of pace from the Test arena, with the promise of plenty of Twenty20 fireworks. Both Perth (1-1) and the Sixers (1-2) have been hot-and-cold early on and a victory will be needed to get their respective campaigns back on the right course.

5. LOS ANGELES LAKERS v LOS ANGELES CLIPPERS (NBA) 12pm, ESPN

This particular encounter would have been slightly higher up in the pecking order had the Lakers' dynamic duo LeBron James (back) and Anthony Davis (knee) not had injury clouds hovering over them. If they're both out, it will greatly dilute this highly anticipated battle of Los Angeles. Some doubt has to surround Kawhi Leonard's participation, too, given he sat out the last game due to load management. Still, when two of the top three favourites for the title lock horns, it's always a big occasion – especially when they share the same stadium.

And if that's not enough sport, here's some other fixtures that might take your fancy:

9am: NBA, Golden State v Houston (ESPN)

10.30am: College Basketball, Diamond Head Classic third place game (ESPN 2)

12.30pm: Sailing, Sydney to Hobart (7mate)

1pm: College Basketball, Diamond Head Classic championship (ESPN 2)

2.30pm: NBA, Denver v New Orleans (ESPN)

7pm: Cricket, South Africa v England – first Test, first day (Fox Sports 507)

7.30pm: NBL, Melbourne v Cairns (ESPN)

7.30pm: W-League, Canberra v Western Sydney (Fox Sports 505)