He is learning to throw underarm.

他在学习从肩下部投球。

youdao

Sanga prods a quick single, and Captain Colly's underarm throw just misses the stumps by inches.

BBC: SL v England: Second ODI as it happened

Ponting and Katich steadied the innings with a stand of 79 before the skipper was run out in the afternoon session following BJ Watling's direct underarm throw.

BBC: Michael Clarke ton puts Australia on top in Wellington