NBA: Ranking all 30 starting centers for 2019-20

Alex Len took major strides in rehabilitating his reputation after being perceived as a massive lottery bust following five middling years with the moribund Phoenix Suns, who took him fifth overall in the deservedly maligned 2013 NBA Draft.

Coming to the Atlanta Hawks as a free agent last season, Len emerged as a legitimate stretch 5, taking 2.6 3-pointers per game and making 36.3 percent of those attempts, while averaging a career-high 11.1 points per game to go with 5.5 rebounds in 20.1 minutes per night.

After attempting 25 3s in five years in Phoenix, Len was unleashed to let it fly 204 times from the great beyond.

He was still reasonably effective in a more traditional area of the floor, shooting 50.3 percent of his attempts from the restricted area and converting 63.8 percent of them.

If anything, he emerged as the embodiment of the modern big — 7-foot-1 and taking 81.8 percent of his shots from either point-blank or 3-point range.

Len will be thrust into a larger role after serving in a time-share with Dewayne Dedmon last season, as Dedmon signed with the Sacramento Kings over the summer.

The Hawks did bring in former Warriors big man Damian Jones and have rookie Bruno Fernando on the roster, but it is likely that Len will do the heavy lifting at the 5.

He’s not a particularly strong rebounder for his size, snaring 10.5 percent of offensive rebound chances and last season dipping to 18.5 percent at the defensive end after rebounding at a 24.7 percent clip off the defensive window for the Suns.

The Hawks were marginally better with Len on the floor, but he’s foul-prone — 4.9 per 36 minutes in his career — and Atlanta will need some significant minutes from Jones in a platoon.

Entering his age-26 season, one also has to ask whether the Alex Len we see today is about as good as it’s going to get. If so, it’s a slow 3-point shooting big who has poor timing as a rebounder.