|4 |1 |0 |1 |0 |0 |1 |4 |2 |3 |1 |0 |1 |0 |0 |colspan=3|19 |-bgcolor=efefef |align=left|Hard W–L |0–0 |0–1 |1–1 |5–4 |6–12 |9–11 |8–11 |29–16 |19–15 |10–15 |15–7 |12–14 |14–11 |13–11 |24–18 |26–18 |20–15 |8–12 |4–7 |9–11 |1–4 |1–3 |4 / 217 |234–217 |52% |-bgcolor=efefef |align=left|Clay W–L |0–0 |0–0 |0–2 |1–1 |5–8 |0–6 |7–5 |5–2 |5–8 |6–6 |2–2 |3–4 |0–4 |0–1 |7–6 |1–3 |4–6 |3–4 |5–6 |1–2 |0–0 |0–0 |1 / 71 |55–76 |42% |-bgcolor=efefef |align=left|Grass W–L |1–0 |0–0 |0–1 |3–2 |5–3 |7–3 |0–2 |8–2 |7–2 |7–2 |0–0 |1–3 |2–2 |2–1 |5–4 |11–4 |8–3 |4–4 |2–3 |1–2 |0–0 |1–1 |3 / 47 |75–44 |63% |-bgcolor=efefef |align=left|Carpet W–L |1–0 |0–0 |0–0 |0–0 |2–3 |1–3 |2–1 |1–1 |0–1 | colspan="13" style="color:#767676" |Discontinued |0 / 8 |7–9 |44% |-style=font-weight:bold;background:#efefef |style=text-align:left|Overall win–loss |2–0 |0–1 |1–4 |9–7 |18–26 |17–23 |17–19 |43–21 |31–26 |23–23 |17–9 |16–21 |16–17 |15–13 |36–28 |38–25 |32–24 |15–20 |11–16 |11–15 |1–4 |2–4 |8 / 343 |371–346 |52% |-style=font-weight:bold;background:#efefef |align=left|Win % |100% |0% |20% |56% |41% |43% |47% |67% |54% |50% |61% |43% |48% |54% |56% |60% |57% |43% |41% |42% |20% |33% |colspan=3| |-bgcolor=efefef |align=left|Year-end ranking |286 |193 |201 |73 |61 |70 |98 |22 |26 |37 |73 |56 |100 |78 |27 |23 |20 |80 |100 |95 |147 |273 |colspan=3|{{Tooltip|'$10,160,232|Career Prize Money – Singles & Doubles combined}} |} Doubles Style of play Karlović's plays a very offensive and powerful playing style. His best and most powerful weapon is his serve. His height of 2.11 meters makes his serve very powerful and it is regarded as one of if not the best in tennis history. He has hit 13,762 aces during his career, the second most in all of ATP history. Besides his huge serve. Karlović also has a powerful forehand which he usually hits deep and fast into his opponent's baseline. On his backhand side, he usually slices the ball deep into his opponent's baseline and rarely uses the one-handed backhand drive that he possesses. Karlović is also known as a serve-and-volleyer. His serve usually causes players to return the ball lightly, at which point he will come forward on the ball and volley it. His skill at the net is one of the key traits of his playing style. Serving records On 18 September 2009, Karlović hit 78 aces (77 aces on 1st serve) in a Davis Cup match against Radek Štěpánek, breaking his previous record of 51 (against Daniele