After losing game 3 of the 2019-20 NBA finals, the Los Angeles Lakers lead the Miami Heat 2-1 in the series. The Lakers got to the finals after beating the Portland Blazers, the Houston Rockets, and the Denver Nuggets in the first three rounds of the playoffs with a score of 4-1 in each of those series. The Lakers are now 2 wins away from winning the championship and winning all series 4-1. (Note that the Lakers ended up winning the series 4-2 and didn't achieve this feat).
Since the NHL and the NBA playoffs have been played a best of 7 series on all rounds, has there ever been a team winning all rounds with the exact same score?