Robin Montgomery defeated Katie Boulter 1-6 6-3 6-4 in the Madrid round of 64 on clay. The upset overturned the form book — Katie Boulter came in ranked #56.
Montgomery R. came through in three sets.
Montgomery R. and Boulter K. faced 3 of the same opponents in the last 12 months. Montgomery R. went 0–3 (0%) against them, Boulter K. 2–2 (50%). Boulter K. came out better against 2 of 3 comparable opponents, Montgomery R. against 0 — though 1 of those edges carries caveats (lower-tier event).
Only 3 common opponents — small sample, treat as indicative.
Robin Montgomery beat Katie Boulter 1-6 6-3 6-4. Umpiry, "Robin Montgomery vs Katie Boulter — Madrid Round of 64", https://umpiry.com/match/2024-04-22/boulter-vs-montgomery-madrid-r64?utm_source=cite (as of 22 April 2024).