My foot got stuck in the mat and the guy powered through it and threw me over his leg and my foot stayed behind. He didn't realize what what happening, but I knew he played rough. Some people's going easy is the same as others' going full out. There was absolutely no maliciousness on his part that I'm aware of. One's safety is their own responsibility. I knew I should have declined and I ignored my gut. A strong, brand new yellow belt is dangerous and I should have walked away. There are other guys that I love to drill with, but I won't spar them under any circumstances. They are simply too powerful and too green for me to spar safely.
I didn't reply to make the club or the person look bad. I replied to make sure people know that you need to be careful about your choices when you're training. Guard your safety, since no one else can do it for you, no matter their experience. When you start, watch how people play. If someone looks like they play too rough for you, then don't spar them. If someone's on the edge but is experienced, here's what I did. I said, "hey, my breakfalls aren't good enough to deal with your throws yet. Let's go really easy, since I don't feel like getting hurt today". Usually that's good enough. A yellow belt doesn't know how to go easy unless they're experienced in other arts. I had 10 years of training before starting Judo, so I know how to go easy and I always watch for my partner's safety. That's not to say I haven't injured people in randori, but they were able to continue training because I was looking out for their safety as much as my own. I try really hard to make sure that I spar safely. I won't injure someone to score a point. But accidents happen in contact sports.
My point is, don't let your ego get in the way of your safety. I did.