It may be that Tjen is playing in her first tour-level event, but her early victory over 24th seed Varinika Kudematova showed that she had the ability to create problems.
The 23-year-old became professional last year after completing his sociology degree at the university in the United States only, but attracted attention after winning 13 titles on the entry-level ITF World Tennis Tour.
The style of Tjen reminds of the clever former world number one Ashley Bartti, but Radukanu refused to allow his opponent to find his stride.
Redukanu is looking to develop his service as a weapon under the new coach Francisco disease – and it was very effective against the 149th ranked Tigen.
He hit eight aces, landed 79% of his first service and won 76% of the points that put Tajen on the back leg from the beginning of this point.
The power of Redukanu from Baseline continued to push Tajen in the court deeply and prevented Indonesian from using his slices and diversity.
While hard tests lie further – especially if she faces Rybikina in the third round – it was an impressive performance and the trajectory continues upwards. Redukanu has created this season.
The ninth seed Rybakina Czech world number 96 takes on Terreza Valentova later on Wednesday.
