With this victory, Djokovic now has 35 match wins in Shanghai as he continues his quest for a fifth title at the tournament.
Additionally, including team events, Djokovic has won his last 33 ATP-level matches against American opponents. His last loss to a player from the U.S. came against Sam Querrey in the round of 32 at Wimbledon in 2016.
In the next round, Djokovic will face the winner of the match between Italy’s Flavio Cobolli, the 28th seed, and Swiss wildcard Stan Wawrinka.
Michelsen, ranked No. 43, entered this matchup after defeating China’s Bu Yunchaokete with scores of 6-3 and 6-4 in the previous round of the tournament.