Two Baggies youngsters featured for their loan clubs over the final weekend in April.
Defender Evan Humphries helped Oxford City secure Enterprise National League North safety on Saturday afternoon.
The academy graduate played the entirety of their 3-1 victory at Darlington – a result which ensured City ended the term in 17th position and four points clear of the drop.
Ewan Clarke got the first before Matt Taylor bagged a brace. Darlington’s consolation was scored by Toby Lees, seven minutes from time.
Elsewhere, midfielder Cole Deeming came on in the 69th minute of Cheltenham Town’s 4-0 defeat at Bristol Rovers in Sky Bet League Two.
The Albion teenager replaced Ryan Broom at the Memorial Stadium, with the Gas already 3-0 up following Ellis Harrison’s hat-trick. Shaqai Forde went on to add a fourth for the hosts in the closing stages.
The Robins are 17th and host Colchester United in their final game on Saturday, May 2.
Goalkeeper Joe Wildsmith was an unused substitute for Middlesbrough who beat Watford 5-1 at home in the Sky Bet Championship.
