let items = [["bob",1],["jeff",2],["wal-E",2],["bob",1],["bob",10]]
let items2 = []
let Lowest = 0;
for (y in items){
    for (z in items)
      {
        if (items[y][0] == items[z][0] && items[y][1]<=items[z][1]){
          continue;
        } else if (items[y][0] == items[z][0]){
            Lowest += 1
            if (Lowest >= 2){
            break;
            }
            else {
            continue;
            }
        }
        }      
  if (Lowest == 0){
    items2.push(items[y])
  }
}
console.log(items2);

let items = [["bob",1],["jeff",2],["wal-E",2],["bob",1],["bob",10]];

const lowestItem = items.reduce((a, b) => a[1] < b[1] ? a : b);

console.log(lowestItem);