[3] In 2011, he returned to Thika United [4] for the remainder of the year, before rejoining Tusker for the 2012 [5] season helping the side to clinch their ninth league title.

After flirting with AFC Leopards in the June transfer window, Kenyan international midfielder Opiyo sealed a move to Qatar second division side Al-Markhiya SC on 25 July 2016, a team he led to promotion at the end of the season.

In August 2019, Peter Opiyo and Nigerian Uche Kalu signed a contract with FC Altyn Asyr from Turkmenistan.

Despite having a contract, paperwork complications saw him fail to join the team and in mid-November 2019 he issued a termination notice and consequently ended his engagement with the club in early December to become a free agent.

After weeks of training with promotion-chasing Nairobi City Stars, Opiyo joined the second-tier side in January 2020 on a one-and-a-half-year deal.