dolgo is the more complete player of them and is not a mug unlike the other 2.
This. Dolgo is talented and will achieve great things (masters wins, top 10 and possibly a slam), Mugbis is a headcase ball basher who doesn't even care about the game, despite whatever talent he might have. He's a rich kid, content to fall back on daddy's money should his tennis career fail and thus he lacks motivation. Mugrin is just an all-around clown. Disgraceful serve for his height, ugly groundstrokes, awful mentality and complete lack of plan B. Always looks stoned while on court. Zero intensity even when winning. He's a mug and will always remain a mug, his fluke AO semi and a few MM titles will be a highlight of his career.