8‑Oct‑2012 | Tiburon CH | Hard | R32 | 377 | 166 | (7)Denis Kudla [USA] d. (Q)Nielsen | 6-2 7-6(5) | | 0.78 | 6.8% | 8.2% | 50.7% | 51.4% | 50.0% | 6/10 | 1:18 |
1‑Oct‑2012 | Sacramento CH | Hard | R32 | 353 | 278 | Tennys Sandgren [USA] d. (WC)Nielsen | 6-1 6-2 | | 0.49 | 2.2% | 8.9% | 46.7% | 66.7% | 25.0% | 6/10 | 0:52 |
17‑Sep‑2012 | Metz | Hard | Q1 | 355 | 162 | (5)Jan Hernych [CZE] d. Nielsen | 6-3 7-6(2) | | 0.60 | 7.9% | 0.0% | 61.9% | 66.7% | 58.3% | 1/3 | 1:10 |
10‑Sep‑2012 | Petange CH | Hard | R16 | 369 | 71 | (2)Jurgen Zopp [EST] d. Nielsen | 7-6(2) 6-2 | | 0.52 | 3.5% | 9.4% | 52.9% | 66.7% | 35.0% | 6/9 | 1:24 |
10‑Sep‑2012 | Petange CH | Hard | R32 | 369 | 339 | Nielsen d. Jonathan Eysseric [FRA] | 3-6 6-4 6-1 | | 1.28 | 8.7% | 10.1% | 69.6% | 79.2% | 33.3% | 2/5 | 1:27 |
4‑Sep‑2012 | Genova CH | Clay | R32 | 350 | 435 | (LL)Walter Trusendi [ITA] d. (WC)Nielsen | 6-2 7-5 | | 0.72 | 6.5% | 4.8% | 53.2% | 57.6% | 44.8% | 5/9 | 1:36 |
19‑Aug‑2012 | Winston-Salem | Hard | Q1 | 354 | 96 | (7)Sergiy Stakhovsky [UKR] d. Nielsen | 6-3 6-2 | | 0.63 | 9.1% | 9.1% | 52.3% | 60.9% | 42.9% | 1/5 | 0:53 |
18‑Jun‑2012 | Eastbourne | Grass | Q1 | 297 | 183 | Paul Henri Mathieu [FRA] d. Nielsen | 6-2 6-7(3) 6-4 | | 0.78 | 1.0% | 3.1% | 62.2% | 67.2% | 48.6% | 3/7 | 2:01 |
5‑Jun‑2012 | Nottingham CH | Grass | R16 | 259 | 102 | (6)Igor Kunitsyn [RUS] d. (Q)Nielsen | 6-1 3-6 7-6(1) | | 0.83 | 10.8% | 4.3% | 63.4% | 74.6% | 41.2% | 4/6 | 1:47 |
5‑Jun‑2012 | Nottingham CH | Grass | R32 | 259 | 481 | (Q)Nielsen d. (WC)Andrew Fitzpatrick [GBR] | 6-1 6-1 | | 4.29 | 21.2% | 0.0% | 69.7% | 91.3% | 70.0% | 0/0 | 0:36 |
21‑May‑2012 | Korea F2 | Hard | R16 | 274 | 996 | (WC)Cheong Eui Kim [KOR] d. (1)Nielsen | 2-6 6-4 7-5 | | | | | | | | | |
21‑May‑2012 | Korea F2 | Hard | R32 | 274 | 688 | (1)Nielsen d. Soong Jae Cho [KOR] | 6-3 6-1 | | | | | | | | | |
14‑May‑2012 | Korea F1 | Hard | F | 273 | 317 | (2)Samuel Groth [AUS] d. (1)Nielsen | 6-7(4) 6-4 6-1 | | | | | | | | | |
14‑May‑2012 | Korea F1 | Hard | SF | 273 | 548 | (1)Nielsen d. Matthew Barton [AUS] | 6-4 6-4 | | | | | | | | | |
14‑May‑2012 | Korea F1 | Hard | QF | 273 | 488 | (1)Nielsen d. (8)Liang Chi Huang [TPE] | 7-5 6-4 | | | | | | | | | |
14‑May‑2012 | Korea F1 | Hard | R16 | 273 | 675 | (1)Nielsen d. Hong Chung [KOR] | 6-1 6-2 | | | | | | | | | |
14‑May‑2012 | Korea F1 | Hard | R32 | 273 | | (1)Nielsen d. (Q)Young Hoon Jeong [KOR] | 7-6(4) 6-3 | | | | | | | | | |
7‑May‑2012 | Busan CH | Hard | QF | 286 | 174 | (6)Danai Udomchoke [THA] d. Nielsen | 7-6(4) 6-4 | | 0.85 | 10.6% | 1.5% | 60.6% | 57.5% | 50.0% | 0/4 | 1:23 |
7‑May‑2012 | Busan CH | Hard | R16 | 286 | 207 | Nielsen d. Ze Zhang [CHN] | 7-6(9) 6-2 | | 1.22 | 1.3% | 1.3% | 66.2% | 66.7% | 50.0% | 3/5 | 1:45 |
7‑May‑2012 | Busan CH | Hard | R32 | 286 | 273 | Nielsen d. Raven Klaasen [RSA] | 7-5 4-6 6-1 | | 1.14 | 6.6% | 0.9% | 64.2% | 64.7% | 65.8% | 7/9 | 1:51 |
23‑Apr‑2012 | Kaohsiung CH | Hard | R32 | 273 | 229 | Hiroki Moriya [JPN] d. Nielsen | 7-6(6) 6-0 | | 0.69 | 3.0% | 6.1% | 59.1% | 51.3% | 40.7% | 2/7 | 1:24 |
16‑Apr‑2012 | Chinese Taipei F2 | Hard | R32 | 273 | 292 | Yuki Bhambri [IND] d. (8)Nielsen | 6-3 6-4 | | | | | | | | | |
20‑Feb‑2012 | Wolfsburg CH | Carpet | R16 | 228 | 174 | (4)Frank Dancevic [CAN] d. Nielsen | 7-6(6) 1-0 RET | | 0.74 | 2.2% | 4.4% | 60.0% | 66.7% | 55.6% | 2/4 | 0:50 |
20‑Feb‑2012 | Wolfsburg CH | Carpet | R32 | 228 | 195 | Nielsen d. Martin Fischer [AUT] | 7-6(5) 5-7 6-1 | | 1.11 | 3.7% | 5.6% | 56.1% | 66.7% | 51.1% | 11/15 | 1:57 |
10‑Feb‑2012 | Davis Cup G1 R1: SLO vs DEN | Hard | RR | 226 | 112 | Blaz Kavcic [SLO] d. Nielsen | 6-2 6-4 6-4 | | | | | | | | | |
16‑Jan‑2012 | Australian Open | Hard | R128 | 240 | 32 | (30)Kevin Anderson [RSA] d. (Q)Nielsen | 6-1 6-2 6-4 | | 0.64 | 0.0% | 3.8% | 60.0% | 58.3% | 34.4% | 7/13 | 1:53 |
16‑Jan‑2012 | Australian Open | Hard | Q3 | 240 | 134 | Nielsen d. (14)Simone Bolelli [ITA] | 6-7(4) 6-4 6-2 | | 1.17 | 0.9% | 2.8% | 67.9% | 68.1% | 58.8% | 4/5 | 2:24 |
16‑Jan‑2012 | Australian Open | Hard | Q2 | 240 | 280 | Nielsen d. Peter Luczak [AUS] | 6-2 7-5 | | 1.93 | 13.5% | 0.0% | 55.8% | 72.4% | 78.3% | 2/3 | 1:13 |
16‑Jan‑2012 | Australian Open | Hard | Q1 | 240 | 147 | Nielsen d. (21)Rajeev Ram [USA] | 7-5 6-4 | | 1.21 | 2.7% | 1.4% | 70.3% | 63.5% | 45.5% | 6/9 | 1:36 |