Club record
League results at each club since 2016, next to the same club under other coaches.
Bursaspor
Aug 2021 – Oct 2026 · 17 matches
1.94 points per game in 1. Lig (17 matches).
Bursaspor with other coaches, ±3 years: 1.39 (96 matches, 9 coaches).
Line-up Elo: +52 above the league average under him, +45 under the others.
Most used
- B. Altıparmak847' · Elo 1,484
- N. Zalazar828' · Elo 1,545
- João Pedro764' · Elo 1,661
- L. Capan651' · Elo 1,623
- M. Uğurlu651' · Elo 1,490
- H. Ayaroğlu633' · Elo 1,479
- N. Ələsgərov618' · Elo 1,489
- C. Yurdakul558' · Elo 1,410
- U. Yıldız552' · Elo 1,669
- K. Matisli540' · Elo 1,571
Boluspor
Aug 2025 – Feb 2026 · 26 matches
1.52 points per game in 1. Lig (23 matches).
Boluspor with other coaches, ±3 years: 1.35 (131 matches, 10 coaches).
Line-up Elo: +29 above the league average under him, −6 under the others.
Most used
- L. Kouagba2,144' · Elo 1,754
- D. Davas1,973' · Elo 1,633
- Lucas Lima1,853' · Elo 1,615
- D. Liço1,843' · Elo 1,678
- Mário Balbúrdia1,760' · Elo 1,633
- R. Akanbi1,592' · Elo 1,657
- F. Hasani1,589' · Elo 1,839
- D. Şenyurt1,408' · Elo 1,589
- B. Alıcı1,369' · Elo 1,642
- K. Arslan1,250' · Elo 1,693
Ümraniyespor
Apr 2023 – Sept 2023 · 12 matches
0.50 points per game in Süper Lig / 1. Lig (12 matches).
Ümraniyespor with other coaches, ±3 years: 1.36 (210 matches, 10 coaches).
Line-up Elo: −134 below the league average under him, −15 under the others.
Most used
- S. Popov942' · Elo 1,568
- T. Glumac938' · Elo 1,597
- O. Ayık798' · Elo 1,363
- S. Göksu756' · Elo 1,539
- U. Nayir630' · Elo 1,841
- M. Eser591' · Elo 1,529
- A. Epureanu450' · Elo 1,557
- I. Sackey447' · Elo 1,577
- O. Kayode393' · Elo 1,786
- H. Ayaroğlu382' · Elo 1,479
Players under Mustafa Er
Total Elo change of his own players in his matches.
Rose most
- D. Şenyurt+345
in 21 matches · Boluspor
- K. Matisli+303
in 6 matches · Bursaspor
- O. Öztonga+266
in 10 matches · Boluspor
- K. Arslan+265
in 18 matches · Boluspor
- T. Dirdiroglu+206
in 10 matches · Boluspor
Fell most
- S. Popov−118
in 11 matches · Ümraniyespor
- T. Glumac−98
in 11 matches · Ümraniyespor
- Lucas Lima−85
in 21 matches · Boluspor
- A. Epureanu−67
in 5 matches · Ümraniyespor
- U. Nayir−64
in 7 matches · Ümraniyespor
Opponents
Their Elo change in matches against his teams (at least 3 meetings).
Favourite opponents
Hardly any opponent lost Elo against his teams.
Nemeses
+63J. Topalli1564
in 3 matches · Bandırmaspor
+49F. Yazgan1559
in 3 matches · Yeni Çorumspor
+34M. Ologo1549
in 3 matches · İstanbulspor
+32E. Eze1657
in 4 matches · Sarıyer
+23H. Bilazer1753
in 3 matches · Esenler Erokspor
Coaches
Their Elo change in matches against him (at least 3 meetings).
Favourite coaches
Hardly any coach lost Elo against him.
Nemesis coaches
No coach gained Elo against him.