The 21-year-old will earn automatic Great Britain selection for the competition in Talllinn if he can claim victory in the 110m hurdles at the England Under-23 Championships in Bedford.
King has already achieved the European qualifying standard, with a 13.69 second run at the Loughborough International Meet earlier this season.
That ranks the Plymouth athlete as the UK’s top under-23 and second overall behind Windsor’s Lawrence Clarke.
However, King will be up against an athlete who has a faster PB than him in the form of Cardiff’s David Omoregie.
European Indoor Championship semi-finalist Omeregie has a best time of 13.53, but so far this season has only run a legal 13.76, although he did run a wind-assisted 13.66.
King beat Omoregie at the Loughborough International and he will be hoping to do the same on Sunday at Bedford to guarantee his spot in the Great Britain team for Tallin.
It is likely Great Britain will select both athletes if they finish first and second in Bedford, but King will not want to take any chances.
The only other athlete entered in Sunday’s event who has run sub-14 seconds is Birchfield’s Jake Porter.
Meanwhile, King’s club, City of Plymouth, will be hoping to make it three wins out of three on Saturday in Division Two West of the Southern Athletics League.
Plymouth, who have joined forces with Erme Valley Harriers and Tavistock for the competition, have claimed victory in the first meets at Andover and Brickfields.
On Saturday they travel to Perivale, where they will come up against a combined Ealing, Southall and Middlesex side, Worthing and Wycombe.
The Plymouth side currently sit second in the table, level on league points with leaders Harrow, who lie top courtesy of more match points.
For runners who prefer long distance events, the annual Burrator Horseshoe Run takes place on Saturday (2.30pm).
The seven-mile moorland run starts and finishes at Meavy village green and is part of the Meavy Oak Fair.
The run takes athletes to Burrator reservoir and over the summit of Sheepstor and Guttor Tor and back via Meavy River ford.
Last year’s race was won by Tavistock’s James Best. For more information click HERE