The Chinese sprinter headed into the 13th edition of the PSD Bank meeting off the back of two straight victories in the discipline, including recording a continental record 6.47 seconds at the opening event of the series in Karlsruhe.

Su was able to better that feat by clocking a time of 6.43 at the Arena-Sportpark, placing him joint fifth on the all-time list.

He was followed across the line by Cuba's Yunier Perez and the United States' Michael Rodgers, who clocked exactly 6.52 seconds to complete the podium.

There was a reversal of the women's 60m hurdles top two from Karlsruhe, as Christina Manning edged her team-mate Sharika Nelvis.

The Americans finished in world lead times of 7.77 and 7.80 respectively, with Germany's home favourite Pamela Dutkiewicz completing the podium in 7.83.

Two world leads were achieved in the field events, with Serbia's Ivana Spanovic producing a leap of 6.77 in the third round of the women's long jump.

Her effort was enough to deny Germany's Sosthene Moguenara-Taroum the gold, with the local athlete ending as the runner-up on 6.68m.

United States' Quanesha Burks was a further centimetre adrift in third place.

Czech Republic's Tomáš Staněk delivered the final world lead of the night, as he threw a distance of 22.17m in the men's shot put.

He was followed by Croatia's Stipe Žunic and Poland’s Konrad Bukowiecki, who managed 21.13m and 20.73m respectively.

The final field competition saw Poland's Piotr Lisek come out on top in a stacked men's pole vault field, as he achieved a height of 5.86m.

World champion Sam Kendricks settled for second place, as the American finished second having cleared 5.78m.

Konstadinos Filippidis, the 2014 world champion, ended with the same clearance as Kendricks but an early foul meant the Greek athlete finished third.

A second Polish gold of the night came in the men's 800m, with Adam Kszczot winning the first heat in a time of 1min 46.47sec.

He was forced to wait for the second heat to unfold before celebrating victory, but it narrowly arrived after Kenya's Nicholas Kiplangat Kipkoech and Wycliffe Kinyamal ended just off the pace in times of 1:46.52 and 1:46.54.

Kenyan success, however, arrived in both the men's and women's 1,500m finals.

Vincent Kibet led the way in the men's competition as he raced to a winning time of 3:34.91, while Ethiopia's Aman Wote clocked 3:35.31 for second.

Jakub Holusa crossed the line in third, with the Czech runner ending in 3:37.68.

The women's race saw Beatrice Chepkoech storm to victory in 4:04.21, with Poland's Angelika Cichocka ending two seconds behind as the runner-up.

Winny Chebet added to Kenya's success by finishing third in 4:07.86.

A close battle in the men's 3,000m saw Ethiopia's Yomif Kejelcha edge Kenyan rival Bethwell Kiprotich Birgen, with the pair clocking 4:40.55 and 7:40.90.

Spain's Adel Mechaal was third in 7.42.06.

Hungary's Balazs Baji won the men's 60m hurdles in 7.64, with Germany's Erik Balnuweit and Cyprus' Milan Trajkovic clocking 7.66 and 7.68 to round off the podium.

Britain's Asha Phillip prevailed in the women's 60m by finishing in 7.17, as Poland's Ewa Swoboda and American sprinter Quanesha Burks ended adrift in 7.20 and 7.22 respectively.

Other IAAF Indoor legs are scheduled for Madrid, Boston and Torun before the series' conclusion in Glasgow on February 25.

It is building up to the IAAF World Indoor Championships in Birmingham in March.