Singapore Rely on Harris Harun-Jacob Mahler Partnership at the Back, Indonesia Told to Be Wary

Indonesia must be wary of Singapore's defensive strength ahead of their Group A opener at the FIFA ASEAN Cup 2026 at Gelora Bung Karno Main Stadium, Jakarta, on Friday (25/9/2026) evening WIB. Gavin Lee's side is known for its solid defense, with the partnership of Harris Harun and Jacob Mahler as the main axis.

Singapore arrive with an impressive record: only six goals conceded in their last six matches. Coach Gavin Lee, who has managed The Lions since 2024, has brought 23 players with a contingent of experienced defenders. Names such as Irfan Najeeb, Ryhan Stewart, Nur Adam Abdullah, Raoul Suhaimi, Lionel Tan, and Safuwan Baharudin complete the defensive sector. The presence of Safuwan, who now plays for Selangor FC, adds experience with 133 caps, while Harris Harun has collected 155 appearances and captains the team.

In their last meeting at the 2026 AFF Cup, the two teams drew 1-1. At that time, Gavin Lee deployed a four-man defense with Lionel Tan on the left, Adam Abdullah on the right, and Harris Harun and Jacob Mahler as center backs. That formation successfully stifled Indonesia's attack and took Singapore to the semifinals. A similar lineup is likely to be fielded again, with the option of bringing on Ryhan Stewart in the second half to refresh the flanks.

For Indonesia, this match is an early test to gauge the sharpness of the attack under their new coach. Singapore's tight and disciplined defense demands creativity and speed to break down the defensive block. Supporter backing at Gelora Bung Karno could be a driving factor, but the pressure to take three points at home remains high.

"We respect Singapore, but we focus on our own strengths. The first match is always important for building momentum," said an assistant coach of the Indonesian national team during a closed training session, as quoted from an official PSSI statement.

Tactically, Gavin Lee is known to be flexible. He often changes his approach in the second half, including withdrawing Lionel Tan and bringing on Ryhan Stewart to add pace. That strategy paid off when Singapore won 2-1 at Thailand in the second leg of the 2026 AFF Cup semifinals. Indonesia need to anticipate that change of rhythm, especially if the match stays tight until the final minutes.

Indonesia's context: The result of this match will affect the team's confidence and public perception of the development program. A win over Singapore would not only deliver full points but also signal Indonesia's readiness to compete at the regional level. Conversely, a poor result could trigger pressure on the coaching staff and players ahead of the following matches.

With Singapore's solid defensive quality, the big question is: can Indonesia break through the tight Harris Harun-Jacob Mahler partnership and exploit even the smallest gap? The answer will be seen on the pitch, Friday night.