Wojtaszek has acted as Viswanathan Anand's second, assisting the former world chess champion in his successful title defence match against Vladimir Kramnik,[1] in 2010 against Veselin Topalov,[2] in 2012 against Boris Gelfand,[3] in 2013[4] and in 2014[5] against Magnus Carlsen.

[10] In December 2008, he won the 8th Amplico AIG Life International – European Rapid Chess Championship in Warsaw.

[11][12] In 2009, Wojtaszek finished second in the Polish Championship, shared second place with Michael Roiz at the first Lublin Grandmaster Tournament and won the Najdorf Memorial in Warsaw.

In January 2010, Wojtaszek tied for 1st–5th with Eduardas Rozentalis, Pavel Ponkratov, Luke McShane and Igor Lysyj at the 39th Rilton Cup in Stockholm[13] and finished again second in the Polish Championship.

In January 2015, Wojtaszek took part in Tata Steel Masters tournament in Wijk aan Zee, finishing ninth out of 14 players.

[21] In July 2017, Wojtaszek won the Dortmund tournament, scoring 4½ out of 7, ahead of players like Vladimir Kramnik and Maxime Vachier-Lagrave.

[23] In October 2018, his team AVE Novy Bor finished second at the 34th European Chess Club Cup held in Porto Carras, Greece.

The tournament format consisted of 28 games in various time controls (7 classical, 7 rapid and 14 blitz) competing against seven other highly ranked grandmasters.