Wings of Liberty
During interview with Reece Flexner for ESFI World, Nerchio stated that he and MaNa are "some kind of" rivals competing for the spot of best SC2 player in Poland. Indeed for all national tournaments - qualifiers for ESWC, WCG or WCS - MaNa and Nerchio tend to get the top two spots with exception coming either from unlucky brackets or from one of the two missing the tournament. Later in an interviews during 2012 DreamHack Winter with Acer, Nerchio stated that he neither likes nor dislikes MaNa - he just wants to win against him to be best in Poland. On the other hand, Thorin stated that he earlier talked with MaNa and that MaNa actually disliked Nerchio.
Despite the fact that both of these players are accomplished champions - currently having two premier titles championships under their belts - the head-to-head statistics are oddly one sided.
Their first official match against each other was 2011 HomerJ Ttesports Cup Qualifiers with Nerchio winning 1-0 against MaNa. Later they player against each other in EU Go4SC2 Cup #119 and #120 with MaNa winning first match 2-1 and Nerchio taking the subsequent one 2-0. Unfortunately, this was the last time when MaNa actually won against Nerchio: the Zerg player won their matches in IPL Season 2 3-2, in Grubby's Starcraft II Series Pro Invitational 2 semifinal 2-0, DreamHack Winter 2011 Round of 16 2-0, SCAN Invitational 2 3-0, IPL Fight Club 5-1, Eclypsia Cup 1 2-0, IPL Team Arena Challenge 3 1-0, 2012 Ritmix Russian StarCraft 2 League 2-0, GIGABYTE NVIDIA Invitational #1 Quarterfinal 3-1. Nerchio and MaNa also played matches in some tournaments not mentioned in TLPD: in 2011 WCG Poland Nerchio won 2-0, in 2012 WCS Poland Nerchio again won 2-0 in winners bracket and then lost 0-2 and eventually won 2-0 in Grand Finals (MaNa was coming from losers bracket).
Overall MaNa won only 1/2 (depending on how to count Grand Final matches) matches out 15/16 matches and their set statistics is 33-8.
Heart of the Swarm
During last days of Heart of the Swarm beta, MaNa and Nerchio clashed in Round of 12 during IEM Season VII - World Championship. While Nerchio won the first set of the Best of 5, MaNa was able to quickly take the lead 2-1 and finally win the series 3-2.