Site data updated: 2026-05-28 18:14 UTC

John Isner #17 def. Juan Martin del Potro #6

6-1 7-6(2)

Match Information

Date	Mar 31, 2018*
Tournament	Miami Masters
Category	Masters 1000
Surface	Hard
Round	SF
Winner	John Isner
Score	6-1 7-6(2)
Loser	Juan Martin del Potro
Duration	1h 23m

Stat	John Isner	Juan Martin del Potro
Aces	13	4
Double faults	1	3
First serve %	64	49
First serve points won %	83	70
Second serve points won %	75	55
Break points saved %	—	33
Break points converted %	67	—
Service points won %	80	62
Return points won %	38	20
Total points won %	58	42

Pre-match Comparison

Field	John Isner	Juan Martin del Potro
Country	USA	ARG
Birth date	Apr 26, 1985	Sep 23, 1988
Age	32	29
Height	208	198
Handedness	Right-Handed	Right-Handed
Backhand style	Two-Handed Backhand	Two-Handed Backhand
Ranking (entering)	17	6
Ranking points (entering)	2,170	4,155
Elo (entering)	1,924	2,224
Career W-L	467–293	416–172
Career earnings	$22,433,361	$25,896,046

Pre-match H2H

John Isner 4 – 6 Juan Martin del Potro

Path

John Isner's path

Date	Round	Opponent	Score	W/L	H2H	Match data
Mar 30, 2018	QF	Hyeon Chung	6-1 6-4	W	H2H	Match data
Mar 28, 2018	R16	Marin Cilic	7-6(0) 6-3	W	H2H	Match data
Mar 26, 2018	R32	Mikhail Youzhny	6-4 6-3	W	H2H	Match data
Mar 24, 2018	R64	Jiri Vesely	7-6(3) 1-6 6-3	W	H2H	Match data

John Isner's next match

Date	Round	Opponent	Score	W/L	H2H	Match data
Apr 1, 2018	F	Alexander Zverev	6-7(4) 6-4 6-4	W	H2H	Match data

Juan Martin del Potro's path

Date	Round	Opponent	Score	W/L	H2H	Match data
Mar 30, 2018	QF	Milos Raonic	5-7 7-6(1) 7-6(3)	W	H2H	Match data
Mar 28, 2018	R16	Filip Krajinovic	6-4 6-2	W	H2H	Match data
Mar 26, 2018	R32	Kei Nishikori	6-2 6-2	W	H2H	Match data
Mar 24, 2018	R64	Robin Haase	6-4 5-7 6-2	W	H2H	Match data