Andrey Rublev defaulted for allegedly abusing line judge at Dubai Open

Andrey Rublev was defaulted in Dubai . Pic: Kamran Jebreili/AP)

World number five Andrey Rublev was sensationally defaulted after being accused of swearing at a line judge in the deciding set of his semi-final at the Dubai Open.

The combustible Russian was trailing 6-5 in the third against Alexander Bublik when he appeared to say something to the line judge.