A variety of player attributes are rated numerically on a 100-point scale, though none are likely to score lower than 40 or 50 except for relief pitchers' "Endurance". Ratings vary over time with player development, aging, and injuries suffered. All players possess an "Overall" rating, a combination of all other measures weighted by position, a "Peak" projection of overall performance at the height of his career, and an indication of "Health", the likelihood of succumbing to personal injury, which declines with age and major injuries.