[6] In June 2016, Zipser attended the Adidas Eurocamp, a basketball camp based in Treviso for the NBA Draft prospects.

[9] On 12 January 2017, in just his 11th appearance of the season, Zipser made his first career start in the Bulls' 104–89 loss to the New York Knicks; he had a then season-high seven points.

[11] In the Bulls' regular-season finale on 12 April, Zipser set a new career high with 21 points in a 112–73 win over the Brooklyn Nets.

[17] On 1 July 2023, after a break of 11 years, he signed for a second stint with MLP Academics Heidelberg of the Basketball Bundesliga (BBL).

In 2012 he also played in Albert Schweitzer Tournament and was named to the All-Tournament Team, averaging 14.6 points, 5 rebounds and 2.3 assists per game.

[22] However, Zipser gave an autographed game-worn jersey and shorts to Saint Sava Serbian Orthodox Church for a special raffle at 2018 SerbFest in Merrillville, Indiana.