R. Nijboer vs M. Kestelboim prediction

AI prediction

Probability for members

The model has R. Nijboer winning this match. Create a free account to see with what probability, and the most likely set score.

Predicted winner: R. Nijboer
Probability: Members only
Likely score: Members only

See the probability and scoreFree during the beta

Every prediction is computed before the match and never edited afterwards: the model's real accuracy is published match by match.

Men's ChallengerGuayaquilclay16:00Time to be confirmed

R. Nijboer

M. Kestelboim

Community · Who wins?

No votes yet

Vote for the player you think will win. One vote per person, no account needed.

Form and record before the match

Last 10 matches, oldest to most recent

R. Nijboer

M. Kestelboim

5 – 5
Wins – losses: 3 – 7; 12 – 12
Sets won – lost: 7 – 16; 1 loss
Current streak: 1 loss; 17-12 (59%)
2026 record: 2-5 (29%); 47-46 (51%)
Record on clay: 44-39 (53%)

ATP, WTA and Challenger singles matches played since 2020 by R. Nijboer and M. Kestelboim, before this match.

Recent matches

R. Nijboer's last five matches

DB. HassanMaia 2026 · Qualifying · 12 October 20267-5 6-7 5-7
VJ. Barranco CosanoMaia 2026 · Qualifying · 11 October 20266-3 6-2
DM. MoellerBraga 2026 · Round of 16 · 8 October 20263-6 3-6
VM. McDonaldBraga 2026 · Round of 32 · 7 October 20266-1 4-6 6-3
VB. HassanBraga 2026 · Qualifying · 5 October 20266-3 6-3

M. Kestelboim's last five matches

DI. RadulovLyon 2026 · Qualifying · 7 June 20263-6 6-2 3-6
VS. NagalHeilbronn 2026 · Qualifying · 1 June 20266-2 1-6 7-6
DM. SotoSanta Cruz 2026 · Round of 32 · 14 April 20265-7 1-6
DJ. P. VarillasAsuncion 2026 · Round of 32 · 18 March 20260-6 4-6
DJ. B. TorresTigre 2026 · Round of 32 · 17 February 20264-6 3-6

Head-to-head since 2020

No direct meeting since 2020 on the ATP, WTA and Challenger tours.

Road through the tournament

This is R. Nijboer's first match of the tournament. This is M. Kestelboim's first match of the tournament. In 2025, the tournament was won by D. Vallejo, who beat J. P. Varillas in the final (7-5 6-7 6-3).

Key numbers

In tie-breaks, R. Nijboer wins 45 % (18 of 40), M. Kestelboim 65 % (13 of 20). In deciding sets, R. Nijboer wins 37 % of the time (46 matches), M. Kestelboim 58 % (26 matches). After losing the first set, R. Nijboer turned 17 % of matches around (54 occasions), M. Kestelboim 10 % (39 occasions). After winning the first set, R. Nijboer went on to win 70 % of matches, M. Kestelboim 90 %.

Completed ATP, WTA and Challenger singles matches since 2020, before this match, retirements and walkovers excluded.

Frequently asked questions about R. Nijboer – M. Kestelboim

Who is the favourite between R. Nijboer and M. Kestelboim?: No bookmaker odds are available for this match. Pronocast's model has R. Nijboer winning. The win probability and most likely score are for members before the match.
When is the R. Nijboer – M. Kestelboim match?: On Sunday, 25 October 2026, at the Guayaquil tournament (clay). The time is still to be confirmed.
What is the head-to-head between R. Nijboer and M. Kestelboim?: No meeting between R. Nijboer and M. Kestelboim appears since 2020 on the ATP, WTA and Challenger tours.
Where can I see the prediction for R. Nijboer – M. Kestelboim?: In the Pronocast app, for members: probability of winning, most likely score and comparison with the odds. It will be published on this page with the result once the match is over.

How the model computes its predictions