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Marcus Kroloff

Tualatin, OR
4.0C year-end 2025
44 matches · 33W–11L · seasons 20192026
Bump probability
3.54.04.5lowhigh

Where this rating stands today. Taller means more likely. The dashed lines are the band edges, and the three shaded areas are the three percentages below.

3.94
estimated dynamic rating
Where the rating sits now, on 8 matches this season · USTA never publishes this number
0%
down to 3.5
77%
stay 4.0
23%
up to 4.5
Projected to December: 0% down · 94% stay · 6% up, from a year-end estimate of 3.87. Lower than today’s 3.94 because form regresses — players this far into their band partway through a season have historically finished nearer the middle of it. Keep playing at this level and the numbers above are the ones that hold.

A 4.0 runs from 3.51 to 4.00. This rating sits in the top of the band, and every match moves it.

Our estimate, not a USTA figure — scale measured at this point of 2023 on 2160 players. Graded publicly in December when USTA publishes year-end ratings. It moves when you play, and occasionally when we improve the model.

Where you rank
Tualatin · 4.0
1 of 13
OR · 4.0
17 of 498

Marcus is ranked among players at the same level in the same place, by our estimated dynamic rating — not the published level, which is the same for everyone in the band. Groups smaller than five are not ranked, because a placing out of two is noise dressed as standing.

Teams14 teams · 2015–2026
SHC-Cosart
2026 Adult 40 & Over · 4.0 Men
2026
SHC-Monson
2026 Mixed 40 & Over · 9.0 Mixed
2026
SHC-Young
2026 Adult 18 & Over · 4.0 Men
2026
SHC-Christensen/Socolofsky
2025 Adult 40 & Over · 4.0 Men
2025
SHC-Young/Slominski
2025 Adult 18 & Over · 4.0 Men
2025
SHC-Farrell/Kang
2024 Adult 40 & Over · 4.0 Men
2024
Over timerating by season, and how you rank
Rating by season

Marcus has been a steady 4.0 across all 7 seasons on record.

3.54.02019202020222023202420252026

The line is our estimate; the horizontal lines are level boundaries, so crossing one is a bump. Hollow points are years we inferred from the level played the following season, because USTA publishes a current rating but no history. The smaller, faded points — 2020, 2022, 2023 — rest on fewer than 5 matches, where the estimate is mostly the level the player was entered at rather than anything they did on court. Read the shape, not the value.

How you rank at your level
At 4.0, Marcus has gone from the 91st to the 99th percentile of players at that level, 2019 to 2026.

Percentile compares the same level in the same season, by share of games won. Mixed is shown for context — USTA rules exclude it from your adult rating unless mixed is all you play.

By level2 levels played
4.0
78.9%
30W–8L · 61% of games
9.0mixed
1W–1L
not enough matches yet

Games won matters more than matches won — NTRP adjusts on margins.

Match history44 matches
W
2026-07-17 · SHC-Monson · #3 Doubles · 9.0 · with Lisa Stoica
+0.000better than expected — took 86% of games against 64% expected
6-0, 6-2
L
2026-07-05 · SHC-Monson · #3 Doubles · 9.0 · with Alix Edwards
+0.000below expectation — took 40% of games against 56% expected
2-6, 6-0, 1-0
W
2026-06-06 · SHC-Young · #1 Doubles · 4.0 · with Pete Stirling
0.029below expectation — took 63% of games against 70% expected
6-4, 6-3
W
2026-05-30 · SHC-Young · #2 Doubles · 4.0 · with Pete Stirling
+0.051better than expected — took 80% of games against 52% expected
6-3, 6-0
W
2026-04-18 · SHC-Young · #1 Doubles · 4.0 · with Hector M Salomon
+0.035better than expected — took 67% of games against 49% expected
6-3, 6-3
W
2026-03-22 · SHC-Cosart · #1 Doubles · 4.0 · with Jeroen Swanborn
+0.043better than expected — took 92% of games against 63% expected
6-1, 6-0
W
2026-02-22 · SHC-Cosart · #2 Doubles · 4.0 · with Jonathan Caplan
+0.014better than expected — took 52% of games against 47% expected
4-6, 6-4, 1-0
W
2026-01-18 · SHC-Cosart · #2 Doubles · 4.0 · with Jonathan Caplan
+0.009better than expected — took 71% of games against 62% expected
6-2, 6-3
L
Aaron Stout / Sotaro Noguchi
2025-06-20 · SHC-Young/Slominski · #2 Doubles · 4.0 · with Hector M Salomon
0.016below expectation — took 40% of games against 48% expected
6-4, 6-4
W
Charles Lockwood / Austin Rice-Stitt
2025-06-14 · SHC-Young/Slominski · #1 Doubles · 4.0 · with Hector M Salomon
0.025below expectation — took 60% of games against 67% expected
6-4, 6-4
W
2025-06-08 · SHC-Young/Slominski · #1 Doubles · 4.0 · with Hector M Salomon
+0.005better than expected — took 75% of games against 66% expected
6-1, 6-3
L
2025-05-31 · SHC-Young/Slominski · #2 Doubles · 4.0 · with Jae Joon Kang
+0.002about as expected — took 53% of games against 50% expected
2-6, 6-4, 1-0
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Not affiliated with or endorsed by the USTA. Rating shown is the published USTA year-end figure; match data is from USTA TennisLink.