A connecting rod for converting a linear motion of a piston into a rotational motion of a crankshaft may include a small connecting eye for connecting the connecting rod in a rotatable manner to a pin of the piston and a large connecting rod eye for connecting the connecting rod in a rotatable manner to the crankshaft. The connecting rod may include at least one eccentric lubricating groove disposed in at least one of an inner face of the large connecting rod eye, an inner face of the small connecting rod eye, and a bearing bush arranged in the small connecting rod eye. The at least one groove may have an axis inclined with respect to an axis of at least one of the respective small connecting rod eye, large connecting rod eye, and bearing bush.