"He excels at playing football" 是一个简洁的表达方式来说明某人擅长踢足球。为了更详细地描述这一能力，并包含具体案例，我们可以扩展这个句子如下：
"John is renowned for his exceptional prowess on the football field. He excels at playing football, a skill that has been honed over years of dedicated practice and countless matches. His ability to read the game, coupled with his remarkable ball control and strategic positioning, sets him apart from his peers. For instance, during the regional championships last year, John's performance was nothing short of spectacular. He scored a pivotal goal in the final minutes of the semi-final match, leading his team to victory. His precision in passing and his agility in dodging opponents were evident throughout the tournament, earning him the title of 'Most Valuable Player.' Additionally, his leadership on the field, motivating and coordinating his teammates, further underscores his comprehensive skill set in football. Coaches and fellow players alike often commend his work ethic and natural talent, making him a standout figure in the sport."
这段话不仅说明了John擅长踢足球，还通过具体案例展示了他的实际表现和所获得的认可，从而更全面地描绘了他的足球能力。