Novak Djokovic defeated Ivo Karlovic 7-6 6-3 in the Hamburg round of 16 on clay. The result followed the form book — Novak Djokovic came in defending last year's quarter-final.
Djokovic N. took it in straight sets.
Djokovic N. and Karlovic I. faced 10 of the same opponents in the last 12 months. Djokovic N. went 14–4 (78%) against them, Karlovic I. 4–8 (33%). Djokovic N. came out better against 5 of 9 comparable opponents, Karlovic I. against 0 — though 1 of those edges carries caveats (retirement).
Novak Djokovic beat Ivo Karlovic 7-6(3) 6-3. Umpiry, "Novak Djokovic vs Ivo Karlovic — Hamburg Round of 16", https://umpiry.com/match/2008-05-15/djokovic-vs-karlovic-hamburg-r16?utm_source=cite (as of 15 May 2008).