Why are the Timberwolves struggling on defense (even while they keep winning games)?

Timberwolves guard Patrick Beverley, right, and forward Jarred Vanderbilt, left, blocked a shot by Bulls guard Zach LaVine.INDIANAPOLIS — The Timberwolves defense isn't what it was earlier in the season.

Over the past few weeks, the Wolves aren't posting the same numbers on that end of the floor they were earlier in the season. That has been a frequent topic of conversation for them even as they've won six of their last eight games.

The Wolves have the 24th-most efficient defense over the last 10 games.

Part of that may be because the Wolves defense isn't what it was earlier in the season from a schematic standpoint.

As the season has gone on, the Wolves are incorporating some changes to how…