Defending champion Roger Federer reached the final eight of the ATP Cincinnati Masters on Thursday after a walkover match against Germany's Philipp Kohlschreiber.
The German pulled out of the third-round match citing a right shoulder injury.
Federer, the 16-time Grand Slam champion from Switzerland, has not yet finished a set in the three million-dollar hardcourt event after a first-round bye and a 5-2 lead when Uzbek qualifier Denis Istomin retired with an injury in the second round on Wednesday.
Federer will face the winner of a later match between Russian sixth seed Nikolay Davydenko and Spain's David Ferrer on Friday for a berth in the semifinals of the last major U.S. Open tuneup.
上海版牛津一年级英语教案 Unit 3 My abilities
新起点小学一年级英语下册Unit11 Toys教案
上海版牛津一年级英语教案Unit8 Playtime（总五课时）
上海牛津版一年级英语下册Unit2 Small animals第五课时教案
牛津版一年级英语上册unit5 Fruit教案(1)
沪教版小学英语一年级下册教案unit1课时1
上海牛津版一年级英语下册教案Unit9 Revision(3)
沪教牛津版一年级英语上册教案Unit1 My classroom第二课时
牛津版一年级英语上册unit5 Fruit教案(3)
上海牛津版一年级英语下册Unit3 Colours教案(1)
上海牛津版一年级英语下册Unit9 Revision第一课时教案
外研版一年级英语上册教案Unit1 Hello
沪教牛津版小学英语一年级上册 Unit3 period1教案
一年级英语下册Unit2 Small animals第三课时教案
一年级英语上册教案 Unit1My classroom 第三课时
牛津版小学一年级英语上册Unit1 Hello教案
上海牛津版一年级英语下册Unit2 Small animals教案
沪教牛津版小学英语一年级上册 Unit3 period2教案
牛津版一年级英语上册Unit 2 Good morning 教案
牛津小学一年级英语Unit5 Fruit教案（五个课时）