Iga Swiatek extended her lead as world number one on Monday, after winning a fourth straight title at the weekend in Stuttgart, while Paula Badosa climbed to second place in the WTA rankings.

Poland's Swiatek, who took over at the top from Ashleigh Barty after the Australian retired last month, thrashed Aryna Sabalenka in the final in Stuttgart on Sunday.

Spain's Badosa moved to a career-high mark by reaching the semi-finals in Germany before losing to Sabalenka.

Britain's Emma Raducanu edged closer to breaking into the top 10 after her run to the quarter-finals of the same event.

Rankings (Players representing Russia and Belarus are banned from competing under the name or flag of Russia or Belarus until further notice): 

1. Iga Swiatek (POL) 7,181 pts

2. Paula Badosa (ESP) 5,045 (+1)

3. Barbora Krejcikova (CZE) 5,043 (-1)

4. Aryna Sabalenka 4,711

5. Maria Sakkari (GRE) 4,651

6. Anett Kontaveit (EST) 4,511