Shared via Rust Playground

playground.rs

fn main() {
    let mut teams = [
        [ ("Jack", 20), ("Jane", 23), ("Jill", 18), ("John", 19), ],
        [ ("Bill", 17), ("Brenda", 16), ("Brad", 18), ("Barbara", 17), ]
    ];
    
    let teams_in_score_order = teams
        .iter_mut()
        .map(|team| {
            team.sort_by(|&a, &b| a.1.cmp(&b.1));
            team
        })
        .collect::<Vec<_>>();
        
    println!("Teams: {:?}", teams_in_score_order);
}