•Miami will play the winner of the Philadelphia 76ers and Toronto Raptors, with the Sixers leading 3-2 in their first-round series.
•In the Western Conference, the Memphis Grizzlies took a 3-2 lead over the Minnesota Timberwolves with a 111-109 victory.
The Miami Heat clinched their spot in the NBA Eastern Conference semi-finals after beating the Atlanta Hawks despite missing key forward Jimmy Butler.
With scoring sensation Butler and point guard Kyle Lowry injured, Heat held off the visiting Hawks to win 97-94.
It secured a 4-1 win for the Heat in the best-of-seven first-round play-off.
"We clearly had some adversity in this game not having Kyle or Jimmy, and our group doesn't even blink," Heat coach Erik Spoelstra told ESPN.
"That's not even something we have to address. We just pivot and put in the game plan and everybody gets ready and tapes their ankles and gets out there and competes.
"Everybody that played had their fingerprints on this."
Miami will play the winner of the Philadelphia 76ers and Toronto Raptors, with the Sixers leading 3-2 in their first-round series.
The Heat will have at least six days off before the second round begins - on Monday at the earliest — and will be hoping Butler and Lowry will be fit to return.
Butler, a six-time All-Star, had averaged 30.5 points, 7.8 rebounds and 5.3 assists in the series but was ruled out of the fifth game because of right knee inflammation.
In his absence, Victor Oladipo scored 23 points after fighting back from his own injury problems.
Oladipo, 29, said a year ago he was at "the lowest point" after knee and quadriceps injuries, but starred by leading the scoring for the Heat in his first play-off start since August 2020.
After the Hawks recovered to 79-76 with eight minutes and 14 seconds remaining, Oladipo posted seven of Miami's next 13 points as they moved clear at 92-82.
Atlanta fought back and had a couple of chances to level in the final 30 seconds, but a missed shot came before a game-ending steal by Bam Adebayo.
In the Western Conference, the Memphis Grizzlies took a 3-2 lead over the Minnesota Timberwolves with a 111-109 victory.
Ja Morant - recently crowned the 2021-22 NBA Most Improved Player - scored 18 of his game-high 30 points in the fourth quarter, netting the Grizzlies' final 11 points which included a tie-breaking lay-up in the final second.
The Phoenix Suns also edged 3-2 ahead after five games of their first-round series against the New Orleans Pelicans thanks to a 112-97 home win.
Mikal Bridges scored 31 points for the Suns, while Chris Paul added 22 points and 11 assists.