On 26 April he was stepped up to Group 3 class to contest the Sandown Classic Trial and ran second to Bangkok, finishing strongly after being repeatedly denied a clear run in the last quarter mile.
With Murphy in the saddle he led for most of the way and after being headed by the favourite Battle of Toro 200 metres from the finish he rallied to regain the advantage in the closing stages and won by a short neck.
Sixteen days after his defeat at Goodwood, Technician was matched against older horses for the first time when he contested the Geoffrey Freer Stakes over 13+1⁄2 furlongs on soft ground at Newbury Racecourse and started the 10/1 outsider of the five contenders.
[12] In the 243rd running of the St Leger Stakes on good to firm ground over 1 mile 6 furlongs on 14 September at Doncaster Racecourse Technician started at odds of 20/1 and never looked likely to win, finishing sixth of the eight runners behind Logician.
After being restrained in the early stages by Pierre-Charles Boudot, who was riding the colt for the first time, Technician produced a sustained run in the straight to overtake the front-running Moonlight Spirit in the final 100 metres and win by three quarters of a length.
The other four runners were Holdthasigreen (winner of the race in 2018), Lah Ti Dar (runner-up in the 2018 St Leger), Way To Paris (Prix Maurice de Nieuil) and the Czech-trained outsider Iskanderhon.
After racing in mid-division Technician made progress in the straight, took the lead from Holdthasigreen 200 metres out and held off the challenge of Call The Wind to win by one and a quarter lengths.
"[17] The flat racing season in Britain and Ireland was restructured as a result of the COVID-19 pandemic and Technician did not reappear until 18 June when he started the 4/1 second favourite for the Gold Cup over 2+1⁄2 miles at Royal Ascot.