Joe Frazier popularized the Philly Shell, Mayweather perfected it.There are two ways to use the Philly shell, one is for an offensive mindset fighter with batteries included.

The 2nd is a defensive-minded fighter with quick reflexes and the timing to counter mistakes. 

As the NBA season barrels on, the Philadelphia 76ers and Chicago Bulls are about to face off in a much-anticipated game that could have significant implications for both teams. With the Bulls riding a recent hot streak, winning three in a row and five of six, they're looking to solidify their spot in the play-in tournament. Meanwhile, the 76ers are eyeing a playoff berth, but their recent 109-105 double-overtime loss to the Bulls has left them hungry for redemption.

But enough about the storylines – let's talk numbers. Specifically, why the under 221.5 is the play to make for this showdown. Here's the breakdown:

1. Chicago's Offensive Rating: The Bulls currently rank 24th in offensive rating, which means they're not exactly lighting up the scoreboard. With their focus on grinding out wins through tough defense and gritty play, this makes for a game where points could be at a premium.

2. Chicago's Pace: The Bulls are ranked 17th in pace this season, indicating they're not a team that likes to run and gun. Instead, they prefer a more deliberate style of play, which often results in lower-scoring games.

3. The Under Trend: The Bulls have been one of the best teams to bet the under this season, with a trend pointing to a preference for low-scoring games. With their defensive focus and slower pace, it's no surprise that they've consistently delivered on this front.

4. Philly's 3-Point Shooting: While the 76ers have some serious firepower in MVP candidate Joel Embiid, their recent 10-for-36 performance from beyond the arc against the Bulls demonstrates that they can struggle from downtown. If they can't find their shooting touch, it'll be tough to put up big numbers against a stout Bulls defense.

5. Player Matchups: Zach LaVine has been on fire against the 76ers, averaging 28.6 points per game in his past five matchups. However, with defensive stalwart Javonte Green returning to the Bulls' lineup after knee surgery, we could see some extra pressure on Philly's scorers. On the other side, Nikola Vucevic is pulling down an impressive 16.3 rebounds per game against the 76ers this season, indicating that he's been able to limit their second-chance opportunities. If Harden sits I assume that will also put a hit on this total.

So, for those looking to cash in on this exciting matchup, the under 221.5 at -105 is where it's at. With both teams prioritizing defense and grinding out wins, we're likely to see a hard-fought, low-scoring affair. As DeMar DeRozan said, the Bulls are "fighting for their life every single game," and with the 76ers eager to clinch a playoff spot, you can bet that neither team will be giving up easy points.