No Magical Powers
Cap only has his Shield
Just a random encounter in a area with lots of space. Cap is at his peak and has his shield with him. Neither have weapons (apart from Cap's shield) and its to the death! You can include superhuman ability's like superhuman strength, superhuman speed and etc but no powers like spiderman's web for example. There is no point mentioning guys like superman because everyone knows that is unfair so try and pick more realistic opponents that Cap can at least last more then a few seconds with. So to be more specific anyone below hulk and superman but above Cap!