Kilmarnock's unbeaten run came to an end as they lost 2-1 to Celtic in the Scottish Premiership. The match saw Daizen Maeda open the scoring for Celtic in the 56th minute with a header into the bottom corner. Kilmarnock equalised in the 83rd minute through David Watson's thumping header from a Greg Kiltie corner. However, Celtic were awarded a penalty in injury time after Kiltie handled the ball, and Kelechi Iheanacho stepped up to convert from the spot. Iheanacho, who signed late in the transfer window, made his debut as a 70th-minute substitute. The victory keeps Celtic top of the table, while Kilmarnock suffered their first defeat of the campaign. Brendan Rodgers' team dominated possession with 76% and had 21 shots, but only six of their attempts were on target. Kilmarnock created chances worth 1.9 expected goals, but were unable to capitalise. The match was a quiet affair in the first half, with Celtic in control but unable to find the breakthrough. The travelling supporters made their presence known, entering Rugby Park in the 12th minute to protest Celtic's board. The win marks a significant moment for Celtic, who remain undefeated after their opening five games. Kilmarnock will look to bounce back from the defeat, while Celtic will aim to continue their strong start to the season. The impact of Iheanacho's goal cannot be overstated, as it secured all three points for Celtic. The Nigerian forward's debut was one to remember, and he will be looking to build on this performance. Celtic's dominance eventually paid off, but Kilmarnock will be disappointed not to have taken anything from the match.