SINGAPORE - Raffles Institution (RI) booked their spot in the semi-finals of the A Division boys football national championship after beating Temasek Junior College 3-1 in the final group match of the second round on Tuesday.

RI opened the scoring in the 12th minute at the Nanyang Junior College (NYJC) field through midfielder Tan Teck Ann.

Teammate Jonathan Chua, whose act of sportsmanship last Friday during his side's loss to Anglo-Chinese Junior College (ACJC) was widely praised, doubled RI's lead minutes after the restart.

With his team trailing 2-1 in last week's match against ACJC, the 17-year-old striker had fallen in the penalty area after a challenge from the opposing defender and the referee had awarded Raffles a penalty.

But Jonathan immediately went to the official and told her that there was no contact and she had made a mistake. Upon consultation with the linesman, the referee awarded a goal kick and Raffles ended up losing the match 3-1.

There was no controversy in Tuesday's match.

RI added a third in the 72nd minute before Temasek finally got on the scoresheet three minutes later.

In the semis, Raffles will face defending champions Meridian Junior College (MJC), who beat Victoria Junior College (VJC) 1-0 on Tuesday, while ACJC will play VJC in the other last-four clash.