I'm sure he is very talented, but it's getting a bit annoying that Haase's list of people who beat him just keeps on growing with players ranked 150 or way, way higher
Copy-paste from a Dutch forum:
Maxime Teixeira (#287), 2-6 2-6, Rennes 2015
Artem Smirnov (#407), 3-6 6-4 4-6, Szczecin 2015
Lamine Ouahab (#313), 2-6 4-6, Casablanca 2015
Jules Marie (#271), 6-7(5), 1-5 RET, Auckland 2015
Enzo Couacaud (#319), 4-6, 7-6(5), 6-7(4), Rennes 2014
Radu Albot (#189), 6-1, 3-6, 0-6, Trnava 2014
Alexander Zverev (#285), 0-6 2-6, Hamburg 2014
Norbert Gombos (#166), 7-5 4-6 5-7, Prostejov 2014
Aleksandr Nedovyesov (#73), 6-7 (6) 4-6, Casablanca 2014
Frank Dancevic (#152), 6-7 (5) 6-3 5-7 6-7 (3)
Pablo Carreno-Busta (#256), 1-6 6-2 6-7(5), Barcelona 2013
Hiroki Moriya (#204), 6-2 6-7(6) 3-6, Bangkok 2012
Mate Pavic (#640), 4-6 6-7(2), Rosmalen 2012
Lamine Ouahab (#752), 3-6 2-6, Casablanca 2012
Julien Benneteau (#113), 6-3 6-7(7) 6-7(6), Winston-Salem 2011
Axel Michon (#464), 3-6 6-7(6), Boekarest 2010
Andrea Arnaboldi (#291), 3-6 3-6, Martinstad 2010
Lamine Ouahab (#181), 4-6 6-7(4), Rome 2010
George Bastl (#470), 6-4 4-6 3-6, Marseille 2008
Kamil Capkovic (#366), 6-7(5) 6-3 3-6, Bratislava 2007
Ivan Navarro (#113), 6-7(5) 6-7(0), Tokio 2007
Nenad Zimonjic (#495), 6-7(8) 6-3 5-7, Halle 2007
Peter Wessels (#530), 1-6 6-3 6-7(1), Praag 2007
But yeah I must admit, losing against Rublev isn't his worst loss ever