  The upper tail problem in a sparse Erd\H{o}s-R\'enyi graph asks for the
probability that the number of copies of some fixed subgraph exceeds its
expected value by a constant factor. We study the analogous problem for
oriented subgraphs in directed random graphs. By adapting the proof of Cook,
Dembo, and Pham, we reduce this upper tail problem to the asymptotic of a
certain variational problem over edge weighted directed graphs. We give upper
and lower bounds for the solution to the corresponding variational problem,
which differ by a constant factor of at most $2$. We provide a host of
subgraphs where the upper and lower bounds coincide, giving the solution to the
upper tail problem. Examples of such digraphs include triangles, stars,
directed $k$-cycles, and balanced digraphs.
