Iga Swiatek returns to world number one after ruthless WTA Finals victory

Iga Swiatek thrashed Jessica Pegula in the final. Pic: Fernando Llano/AP

Iga Swiatek took less than an hour to regain her world number one spot after sweeping aside Jessica Pegula 6-1 6-0 in the final of the WTA Finals in Cancun.

The 22-year-old Pole proved far too strong for the fifth-seeded Pegula in a final held over to Monday due to persistent bad weather during the tournament.