IFK Göteborg After playing for local club
IK Kongahälla, he joined the youth team of
IFK Göteborg in 2004, before being promoted to the senior team in 2005. He quickly made a name for himself with his hard tackles, fighting spirit and generally fearless playing style. When
Håkan Mild retired after the 2005 season, Wernbloom secured a place in the starting line-up. However, during the following season he struggled to retain his place as the club changed its playing style under new management. When striker
Marcus Berg left to play for
FC Groningen in the summer of 2007, Wernbloom switched to forward and was able to be a starter once again.
AZ In April 2009, he signed a contract with Dutch club
AZ. He made his
Eredivisie debut against
Heracles Almelo on 2 August 2009 and scored his first goal in a 3–3 draw away to
VVV on 20 February 2010. Wernbloom scored a goal in both play-off round legs against Kazakh side
FC Aktobe, helping his team to qualify for the group stage of the
2010–11 UEFA Europa League.
CSKA Moscow In January 2012, Wernbloom left AZ for signing a long-term contract with the Russian top club
CSKA Moscow. Plagued by injuries, Wernbloom was plunged into the deep end against a highly favored
Real Madrid side in the knockout stages of the Champions League. In the game against his alleged favorite club, he scored a dramatic half-volley in the dying minutes to equalize 1–1. After the final game of the
2017–18 season, CSKA Moscow announced that Wernbloom would be leaving the club at the end of his contract for family reasons. Wernbloom left CSKA Moscow after a six-year spell with the Russian team.
PAOK On 16 August 2018, Wernbloom arrived in Thessaloniki to agree on personal terms with Greek club
PAOK. Eventually he signed a three–year contract worth €1.1 million per year. On 17 December 2018, Wernbloom was unlucky in the away game against
Levadiakos, as he suffered a ruptured achilles tendon and would stay out of the action for several months, meaning PAOK would be without a key player as they look to win their first league title since 1985. On 20 August 2020, his contract with PAOK was terminated.
Return to IFK Göteborg and retirement On 21 August 2020, Wernbloom signed a contract with IFK Göteborg until the end of the
2021 Allsvenskan season. He announced his immediate retirement from professional football on 14 July 2021, citing injury problems. ==International career==