Zielinski - O'Brien
20.04.2025, Futures 2025, Qualification - 1. round, clay
	
		
			| Zielinski Marcel | 2 : 0 (6-4, 6-3)
 | O'Brien James | 
	
	
		
			|  | 735. | Singles ranking | -. |  | 
		
			| 27. 10. 2000 | Birthdate | 6. 11. 1989 | 
		
			| - | Height | - | 
		
			| - | Weight | - | 
		
			| right | Plays | right | 
		
			| - | Turned pro | - | 
	
 
Head-to-head: 1 - 0
	
		
			| Year | Tournament | Match | S | Surface | 1 | 2 | 3 | 4 | 5 | Round | 
	
	
		
			| 2025 | Futures 2025 | Zielinski | 2 |  | 6 | 6 |  |  |  | Q-1R | 
		
			| O'Brien | 0 | 4 | 3 |  |  |  | 
	
 
Betting odds
 
Latest matches
	
		
			| UTR Pro Tennis Series 5, 25.10.2025 | 
		
			|  | Zielinski - Schlageter | 2:0 | 
		
			| UTR Pro Tennis Series 5, 24.10.2025 | 
		
			|  | Zielinski - Hofman | 2:1 | 
		
			| UTR Pro Tennis Series 5, 21.10.2025 | 
		
			|  | Zielinski - Haupt | 2:0 | 
		
			| UTR Pro Tennis Series 5, 20.10.2025 | 
		
			|  | Zielinski - Van Zijl | 2:1 | 
		
			| UTR Pro Tennis Series 5, 19.10.2025 | 
		
			|  | Zielinski - Wurth Mac-Leay | 2:0 | 
		
			| UTR Pro Tennis Series 5, 18.10.2025 | 
		
			|  | Schlageter - Zielinski | 2:1 | 
		
			| UTR Pro Tennis Series 5, 16.10.2025 | 
		
			|  | Zielinski - Seres | 2:0 | 
		
			| UTR Pro Tennis Series 5, 14.10.2025 | 
		
			|  | Zielinski - Wisniewski | 2:0 | 
		
			| UTR Pro Tennis Series 5, 13.10.2025 | 
		
			|  | Zielinski - Heger | 2:1 | 
		
			| UTR Pro Tennis Series 5, 26.09.2025 | 
		
			|  | Schlageter - Zielinski | 2:0 | 
	
  
 
	
		
			| Futures 2025, Q-2R, 10.08.2025 | 
		
			|  | Storch - O'Brien | 2:1 | 
		
			| Futures 2025, Q-1R, 10.08.2025 | 
		
			|  | O'Brien - Navin | 2:0 | 
		
			| UTR Pro Tennis Series, 01.08.2025 | 
		
			|  | Cham - O'Brien | 2:1 | 
		
			| UTR Pro Tennis Series, 29.07.2025 | 
		
			|  | O'Brien - Vujacic | 2:1 | 
		
			| UTR Pro Tennis Series, 28.07.2025 | 
		
			|  | Staley - O'Brien | 2:0 | 
		
			| UTR Pro Tennis Series, 01.06.2025 | 
		
			|  | Jankoski - O'Brien | 2:0 | 
		
			| UTR Pro Tennis Series, 31.05.2025 | 
		
			|  | O'Brien - Gothelf | 2:0 | 
		
			| UTR Pro Tennis Series, 30.05.2025 | 
		
			|  | Jones - O'Brien | 2:0 | 
		
			| UTR Pro Tennis Series, 29.05.2025 | 
		
			|  | O'Brien - Staley | 2:0 | 
		
			| UTR Pro Tennis Series, 28.05.2025 | 
		
			|  | Ishikawa - O'Brien | 2:0 |