The pair showed maturity in seeing GBHS home against a Horouta crew under Riley Horsfield.
Boys’ High skipper Kobe Donnelly won the toss and chose to bowl on HBR 2.
Senthooran, by technique and temperament an opening batsman, applied himself admirably to life in the middle order on a weekend that saw a number of batsmen lose their wicket when not under scoreboard pressure.
Another leftie, 13-year-old Bihandu Withanage (10), at No 3, impressed with classy drives and scored in double figures at Senior B level for the first time.
GBHS dismissed Te Waka for 65 in 14.4 overs.
Finnbar Whitfield, on at fourth change, took two wickets for six runs off two overs. He went through the defences of Matthew Kotuhi (2) with the first ball of his spell.
Fellow medium-pacer Langford, bowling first change, nabbed 2-18 in 3.4 overs to cap a strong all-round match.
Left-hander Senthooran Thedchanamoorthy topped Horouta’s scoring list with 16 at first drop and looked dangerous before he got a leading edge to a Whitfield delivery and was caught by Cody McMurray.
Lachlan Smith held on to a sharp chance in the gully to dismiss opener Buechler from the bowling of off-spinner Donnelly (1-17-3).
Te Waka’s most productive partnership was Thedchanamoorthy and Daniel Walters (11) - 31 for the second wicket.
The innings closed when Langford bowled Campbell (2).
It was the only game of the Senior B round. HSOB Presidents defaulted to Pioneer Ngatapa, who lead the competition on 12 points from HSOB (8), GBHS (4) and Horouta (0).