Blaylock was driving in Jonesboro on Friday when he crashed and was airlifted to the Atlanta Medical Center in critical condition, said Clayton County police spokesman Clarence Cox.
Cox said the man and woman riding in the van were also taken to the medical center. Their names and conditions were not immediately available.
Blaylock, 46, was a first-round draft pick by the New Jersey Nets out of Oklahoma in 1989.
He played for the Atlanta Hawks between 1992 and 1999, appeared in the 1994 NBA All-Star game and had his best season in 1996-97, averaging 17.4 points and 5.9 assists.
In 13 NBA seasons with New Jersey, Atlanta and Golden State, he averaged 13.5 points and 6.2 assists.
BUCKS: Former Atlanta Hawks coach Larry Drew has been hired by the Milwaukee Bucks as their new coach.
The Bucks announced Friday that they have reached an agreement to hire Drew. General manager John Hammond said Drew’s track record in Atlanta and experience as an assistant coach and former player made him the right choice.
“We look forward to what he will bring to this franchise and we welcome him and his family to Milwaukee,” Hammond said.
Drew will replace interim coach Jim Boylan, who stepped in after the Bucks and Scott Skiles parted ways Jan. 8.
Drew was 128-102 in Atlanta, and the Hawks reached the postseason in each of his three seasons. But general manager Danny Ferry, who inherited Drew when he took over last year, opted to let the coach go after the season as he continues his overhaul of the Hawks.
Milwaukee made the playoffs this year for the first time since 2010, only to be swept by the Miami Heat.
RAPTORS: Masai Ujiri is leaving Denver to take over the basketball operations for the Toronto Raptors.
A person with knowledge of the move said the NBA’s executive of the year has agreed to a deal with the Raptors. The person requested anonymity because the deal has not been officially announced.
Ujiri has been hailed as one of the rising stars among NBA executives thanks to his deft handling of the Carmelo Anthony trade to New York and his ability to assemble a relatively starless roster that still managed to be a contender in the Western Conference.
Ujiri will be returning to Toronto. He was the assistant GM for the Raptors for three seasons before leaving for the Nuggets in 2010.
Yahoo Sports first reported the deal.