ask some questions

ask some questions
1,Argentina levelled 10 minutes later when Lionel went down in what appeared to be a simple 50-50 challenge.
第一句话中what在这里是什么意思?
2,But ultimately with Asian PGA Tour or Euro PGA Tour,the aim is to provide the players with a fine platform for raising their standard.
这句话中,第一个with是什么意思?
翻译3,4句话
3,Although Jaine pulled one back for Colombia, Milito ended their fightback with a fourth Argentine goal in stoppage time.
4,The tournament produced yet another referee row as Colombia, who scored first,were furious with the penalty from which Argentina equalized.