The 2023 Christmas Day slate is quite busy in the sports world, including action in the NFL and NBA. The five-game NBA slate will begin with Knicks vs. Bucks at noon ET and conclude with Suns vs. Mavericks at 10:30 p.m. The NBA on Christmas Day will also include a Lakes vs. Celtics battle at 5 p.m. and a Nuggets vs. Warriors matchup at 2:30 p.m.

In the NFL, the schedule features Chiefs vs. Raiders at 1 p.m., Eagles vs. Giants at 4:30 p.m., and wraps up with 49ers vs. Ravens in a matchup between the current No. 1 seed in both conferences at 8:15 p.m. Before you make any Christmas Day picks and parlays, you NEED to see what SportsLine's advanced computer models have to say about all the games. 

The SportsLine Projection Model simulates every NBA and NFL game 10,000 times, has returned well over $10,000 in profit for $100 players on its top-rated NBA picks over the past five-plus seasons. The model enters Week 9 of the 2023-24 NBA season on a stunning 101-52 roll on all top-rated NBA picks dating back to last season, returning well over $4,000. 

The model is also up well over $7,000 for $100 players on top-rated NFL picks since its inception. The model enters Week 16 of the 2023 NFL season on an incredible 178-129 run on top-rated NFL picks that dates back to the 2017 season. It is also on a 32-21 roll on top-rated NFL picks since Week 7 of last season. Anyone following it has seen HUGE returns!

Now, these models have analyzed the Christmas Day NBA and NFL action and revealed its best five-line parlay picks for the late afternoon and evening, starting at 4:30 p.m. ET. This five-way parlay could lead to a HUGE payout of more than 24-1!

One part of the five-way parlay we'll give away: The model is backing the 76ers (+3) against the Heat in an 8 p.m. ET matchup on Monday. The 76ers are 18-8 against the spread on the season, while the Heat are 11-16 against the number and have failed to cover in five of their last six at home. 

The models also have identified four other extremely strong picks that NEED to be in your five-way parlays, including a play for Ravens vs. 49ers that hits well over 50% of the time! You ABSOLUTELY need to see who it is before locking in any NBA or NFL parlays.

So where does the betting value lie for Sunday's Christmas Day NBA and NFL action? And which team is a MUST-BACK in your Christmas Day parlays? ... Join SportsLine here to see which teams cover the spread, all from the models that have been on dominant runs on top-rated NBA and NFL picks!