Feng Tianwei's mediocre form continued at the Qatar Open yesterday when she was bundled out in the round of 16 by a German ranked seven places below her.

The Singaporean world No. 6 was beaten 2-4 (11-8, 8-11, 14-16, 11-13, 11-8, 10-12) by world No. 13 Solja Petrissa in the International Table Tennis Federation World Tour event.

Petrissa had also foiled Feng's run at the Women's World Cup in October.

The only silver lining for Feng perhaps was her comprehensive 9-11, 11-5, 11-3, 11-1, 11-4 victory over Thailand's Suthasini Sawettabut in the round of 32.

The win allowed her to gain a measure of revenge for her massive upset by the Thai at the SEA Games on home soil last year.

Feng's team-mate Yu Mengyu also fell at the same stage in Doha, going down 8-11, 10-12, 11-4, 7-11, 6-11 to world No. 3 Zhu Yuling of China.

The mighty Chinese also got the better of Feng and Zhou Yihan in the women's doubles, with top seeds Ding Ning and Liu Shiwen accounting for the Singaporean fourth seeds 11-9, 11-8, 11-3.

However, a Singapore player did leave Qatar with a prize when Zeng Jian claimed the Under-21 women's singles title. She beat Japan's Hayata Hina 11-7, 11-5, 11-8 in the final.

Hayata had won the Kuwait Open last week, defeating Zeng in the quarter-finals.

"After I lost to her in the quarter-finals, I went back and reviewed my performance to make the necessary adjustments", said Zeng, who was appearing in her third World Tour U-21 women's singles final.

"In Kuwait, I was trying to play it safe, but for the Qatar Open, I tried to take the initiative and be more aggressive in my play."

"I am very happy with my performance and I played well against her today," added Zeng, who was runner-up at both the Kuwait Open and the Japan Open last year, losing to Hong Kong's Doo Hoi Kem and Japan's Sato Hitomi, respectively.