Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Week | Date | Opponent | Score | Result | Attendance | Record |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | June 28 | at Toronto Argonauts | 24–22 | Win | 29,157 | 1–0 |
| 2.0 | July 6 | vs. Edmonton Eskimos | 29–9 | Win | 32,893 | 2–0 |
| 3.0 | July 13 | at Saskatchewan Roughriders | 42–12 | Win | 26,981 | 3–0 |
| 4.0 | July 19 | vs. Hamilton Tiger-Cats | 22–18 | Win | 29,045 | 4–0 |
| 5.0 | July 28 | at Calgary Stampeders | 32–27 | Win | 28,564 | 5–0 |
| 6.0 | Aug 2 | vs. Saskatchewan Roughriders | 21–9 | Loss | 31,858 | 5–1 |
| 7.0 | Aug 10 | vs. Winnipeg Blue Bombers | 22–21 | Loss | 31,525 | 5–2 |
| 8.0 | Aug 17 | at Calgary Stampeders | 45–45 | Tie | 30,826 | 5–2–1 |
| 9.0 | Bye | Bye | Bye | Bye | Bye | 5–2–1 |
| 10.0 | Aug 31 | vs. Montreal Alouettes | 46–14 | Win | 32,115 | 6–2–1 |
| 11.0 | Sept 9 | at Montreal Alouettes | 32–14 | Loss | 20,202 | 6–3–1 |
| 12.0 | Sept 15 | vs. Toronto Argonauts | 40–7 | Win | 31,156 | 7–3–1 |
| 13.0 | Sept 22 | at Saskatchewan Roughriders | 37–34 | Win | 28,800 | 8–3–1 |
| 14.0 | Sept 29 | vs. Calgary Stampeders | 42–9 | Win | 32,263 | 9–3–1 |
| 15.0 | Oct 5 | at Winnipeg Blue Bombers | 26–20 | Win | 26,593 | 10–3–1 |
| 16.0 | Oct 13 | at Edmonton Eskimos | 24–18 | Win | 33,663 | 11–3–1 |
| 17.0 | Oct 20 | vs. Edmonton Eskimos | 37–26 | Win | 37,011 | 12–3–1 |
| 18.0 | Oct 26 | at Hamilton Tiger-Cats | 27–19 | Win | 19,322 | 13–3–1 |
| 19.0 | Nov 3 | vs. Calgary Stampeders | 25–24 | Win | 34,242 | 14–3–1 |
Question:
Who was the opponent in the Week 4 game?
Answer:
vs. Hamilton Tiger-Cats