We can talk about guard defense all day, but ultimately the problems are always going to persist as long as there is a lack of rim protection on this team. Cousins and JT together cannot protect the rim. Thats always going to be a major issue regardless of who you have on the perimeter (well, unless you have Jordan/Pippen or Lebron/Wade, but we don't).
This it the Synergy breakdown of the Kings defense so far:
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You'd like the isolation defense and the defense against the P&R roll man to be better, but given that this is a relatively small part of opposing teams' offenses against us (6% and 8% respectively), thats not whats killing us. Overall, we're doing a solid job against the P&R ball handler, which is encouraging. But after that is where it breaks down.
The numbers that jump out to me is the the spot-up numbers. 17% of the offense against us and we are 27th in the league in defending it. Spot-ups can happen in several different situations; either out of the pick and roll, where the third and the fourth rotation is slow, or straight up penetration and dish situations. Both situations scream to me that you're lacking defense around the rim area and as a result are having perimeter defenders completely suck in to prevent points in the paint, leaving shooters open to destroy us from the three point line (42% 3ptFG% for the opponent) or by pump faking and making it out into open space (45% 2ptFG% for opposing teams in spot up situations).
We. Need. Rim. Protection. Ideally, you replace JT with a good defensive C and move Cousins to PF.
The other major issue is transition defense. Teams are running on us consistently and effectively. 29th in the league in defending transition baskets is terrible and killing us. Just from watching the team, considering that the team is pretty decent at not turning it over, the problem clearly is that the team isn't getting back after missed shots. This seems to be a teamwide plague that while teams are running on us, players are pouting or complaining to referees about missed calls.
So overall, our problems are mostly terrible rotations against the P&R after the first and second rotation, lack of rim protection, and lack of urgency getting back on defense. Its a teamwide plague and not going to be fixed until there are some serious upgrades in personnel